2 * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
3 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
4 * Copyright 2005 Nokia. All rights reserved.
6 * Licensed under the Apache License 2.0 (the "License"). You may not use
7 * this file except in compliance with the License. You can obtain a copy
8 * in the file LICENSE in the source distribution or at
9 * https://www.openssl.org/source/license.html
13 #include "ssl_local.h"
15 #include <openssl/objects.h>
16 #include <openssl/x509v3.h>
17 #include <openssl/rand.h>
18 #include <openssl/rand_drbg.h>
19 #include <openssl/ocsp.h>
20 #include <openssl/dh.h>
21 #include <openssl/engine.h>
22 #include <openssl/async.h>
23 #include <openssl/ct.h>
24 #include <openssl/trace.h>
25 #include "internal/cryptlib.h"
26 #include "internal/refcount.h"
27 #include "internal/ktls.h"
29 static int ssl_undefined_function_1(SSL *ssl, SSL3_RECORD *r, size_t s, int t)
34 return ssl_undefined_function(ssl);
37 static int ssl_undefined_function_2(SSL *ssl, SSL3_RECORD *r, unsigned char *s,
43 return ssl_undefined_function(ssl);
46 static int ssl_undefined_function_3(SSL *ssl, unsigned char *r,
47 unsigned char *s, size_t t, size_t *u)
53 return ssl_undefined_function(ssl);
56 static int ssl_undefined_function_4(SSL *ssl, int r)
59 return ssl_undefined_function(ssl);
62 static size_t ssl_undefined_function_5(SSL *ssl, const char *r, size_t s,
68 return ssl_undefined_function(ssl);
71 static int ssl_undefined_function_6(int r)
74 return ssl_undefined_function(NULL);
77 static int ssl_undefined_function_7(SSL *ssl, unsigned char *r, size_t s,
78 const char *t, size_t u,
79 const unsigned char *v, size_t w, int x)
88 return ssl_undefined_function(ssl);
91 SSL3_ENC_METHOD ssl3_undef_enc_method = {
92 ssl_undefined_function_1,
93 ssl_undefined_function_2,
94 ssl_undefined_function,
95 ssl_undefined_function_3,
96 ssl_undefined_function_4,
97 ssl_undefined_function_5,
98 NULL, /* client_finished_label */
99 0, /* client_finished_label_len */
100 NULL, /* server_finished_label */
101 0, /* server_finished_label_len */
102 ssl_undefined_function_6,
103 ssl_undefined_function_7,
106 struct ssl_async_args {
110 enum { READFUNC, WRITEFUNC, OTHERFUNC } type;
112 int (*func_read) (SSL *, void *, size_t, size_t *);
113 int (*func_write) (SSL *, const void *, size_t, size_t *);
114 int (*func_other) (SSL *);
118 static const struct {
124 DANETLS_MATCHING_FULL, 0, NID_undef
127 DANETLS_MATCHING_2256, 1, NID_sha256
130 DANETLS_MATCHING_2512, 2, NID_sha512
134 static int dane_ctx_enable(struct dane_ctx_st *dctx)
136 const EVP_MD **mdevp;
138 uint8_t mdmax = DANETLS_MATCHING_LAST;
139 int n = ((int)mdmax) + 1; /* int to handle PrivMatch(255) */
142 if (dctx->mdevp != NULL)
145 mdevp = OPENSSL_zalloc(n * sizeof(*mdevp));
146 mdord = OPENSSL_zalloc(n * sizeof(*mdord));
148 if (mdord == NULL || mdevp == NULL) {
151 SSLerr(SSL_F_DANE_CTX_ENABLE, ERR_R_MALLOC_FAILURE);
155 /* Install default entries */
156 for (i = 0; i < OSSL_NELEM(dane_mds); ++i) {
159 if (dane_mds[i].nid == NID_undef ||
160 (md = EVP_get_digestbynid(dane_mds[i].nid)) == NULL)
162 mdevp[dane_mds[i].mtype] = md;
163 mdord[dane_mds[i].mtype] = dane_mds[i].ord;
173 static void dane_ctx_final(struct dane_ctx_st *dctx)
175 OPENSSL_free(dctx->mdevp);
178 OPENSSL_free(dctx->mdord);
183 static void tlsa_free(danetls_record *t)
187 OPENSSL_free(t->data);
188 EVP_PKEY_free(t->spki);
192 static void dane_final(SSL_DANE *dane)
194 sk_danetls_record_pop_free(dane->trecs, tlsa_free);
197 sk_X509_pop_free(dane->certs, X509_free);
200 X509_free(dane->mcert);
208 * dane_copy - Copy dane configuration, sans verification state.
210 static int ssl_dane_dup(SSL *to, SSL *from)
215 if (!DANETLS_ENABLED(&from->dane))
218 num = sk_danetls_record_num(from->dane.trecs);
219 dane_final(&to->dane);
220 to->dane.flags = from->dane.flags;
221 to->dane.dctx = &to->ctx->dane;
222 to->dane.trecs = sk_danetls_record_new_reserve(NULL, num);
224 if (to->dane.trecs == NULL) {
225 SSLerr(SSL_F_SSL_DANE_DUP, ERR_R_MALLOC_FAILURE);
229 for (i = 0; i < num; ++i) {
230 danetls_record *t = sk_danetls_record_value(from->dane.trecs, i);
232 if (SSL_dane_tlsa_add(to, t->usage, t->selector, t->mtype,
233 t->data, t->dlen) <= 0)
239 static int dane_mtype_set(struct dane_ctx_st *dctx,
240 const EVP_MD *md, uint8_t mtype, uint8_t ord)
244 if (mtype == DANETLS_MATCHING_FULL && md != NULL) {
245 SSLerr(SSL_F_DANE_MTYPE_SET, SSL_R_DANE_CANNOT_OVERRIDE_MTYPE_FULL);
249 if (mtype > dctx->mdmax) {
250 const EVP_MD **mdevp;
252 int n = ((int)mtype) + 1;
254 mdevp = OPENSSL_realloc(dctx->mdevp, n * sizeof(*mdevp));
256 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
261 mdord = OPENSSL_realloc(dctx->mdord, n * sizeof(*mdord));
263 SSLerr(SSL_F_DANE_MTYPE_SET, ERR_R_MALLOC_FAILURE);
268 /* Zero-fill any gaps */
269 for (i = dctx->mdmax + 1; i < mtype; ++i) {
277 dctx->mdevp[mtype] = md;
278 /* Coerce ordinal of disabled matching types to 0 */
279 dctx->mdord[mtype] = (md == NULL) ? 0 : ord;
284 static const EVP_MD *tlsa_md_get(SSL_DANE *dane, uint8_t mtype)
286 if (mtype > dane->dctx->mdmax)
288 return dane->dctx->mdevp[mtype];
291 static int dane_tlsa_add(SSL_DANE *dane,
294 uint8_t mtype, unsigned const char *data, size_t dlen)
297 const EVP_MD *md = NULL;
298 int ilen = (int)dlen;
302 if (dane->trecs == NULL) {
303 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_NOT_ENABLED);
307 if (ilen < 0 || dlen != (size_t)ilen) {
308 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DATA_LENGTH);
312 if (usage > DANETLS_USAGE_LAST) {
313 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE_USAGE);
317 if (selector > DANETLS_SELECTOR_LAST) {
318 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_SELECTOR);
322 if (mtype != DANETLS_MATCHING_FULL) {
323 md = tlsa_md_get(dane, mtype);
325 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_MATCHING_TYPE);
330 if (md != NULL && dlen != (size_t)EVP_MD_size(md)) {
331 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_DIGEST_LENGTH);
335 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_NULL_DATA);
339 if ((t = OPENSSL_zalloc(sizeof(*t))) == NULL) {
340 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
345 t->selector = selector;
347 t->data = OPENSSL_malloc(dlen);
348 if (t->data == NULL) {
350 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
353 memcpy(t->data, data, dlen);
356 /* Validate and cache full certificate or public key */
357 if (mtype == DANETLS_MATCHING_FULL) {
358 const unsigned char *p = data;
360 EVP_PKEY *pkey = NULL;
363 case DANETLS_SELECTOR_CERT:
364 if (!d2i_X509(&cert, &p, ilen) || p < data ||
365 dlen != (size_t)(p - data)) {
367 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
370 if (X509_get0_pubkey(cert) == NULL) {
372 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_CERTIFICATE);
376 if ((DANETLS_USAGE_BIT(usage) & DANETLS_TA_MASK) == 0) {
382 * For usage DANE-TA(2), we support authentication via "2 0 0" TLSA
383 * records that contain full certificates of trust-anchors that are
384 * not present in the wire chain. For usage PKIX-TA(0), we augment
385 * the chain with untrusted Full(0) certificates from DNS, in case
386 * they are missing from the chain.
388 if ((dane->certs == NULL &&
389 (dane->certs = sk_X509_new_null()) == NULL) ||
390 !sk_X509_push(dane->certs, cert)) {
391 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
398 case DANETLS_SELECTOR_SPKI:
399 if (!d2i_PUBKEY(&pkey, &p, ilen) || p < data ||
400 dlen != (size_t)(p - data)) {
402 SSLerr(SSL_F_DANE_TLSA_ADD, SSL_R_DANE_TLSA_BAD_PUBLIC_KEY);
407 * For usage DANE-TA(2), we support authentication via "2 1 0" TLSA
408 * records that contain full bare keys of trust-anchors that are
409 * not present in the wire chain.
411 if (usage == DANETLS_USAGE_DANE_TA)
420 * Find the right insertion point for the new record.
422 * See crypto/x509/x509_vfy.c. We sort DANE-EE(3) records first, so that
423 * they can be processed first, as they require no chain building, and no
424 * expiration or hostname checks. Because DANE-EE(3) is numerically
425 * largest, this is accomplished via descending sort by "usage".
427 * We also sort in descending order by matching ordinal to simplify
428 * the implementation of digest agility in the verification code.
430 * The choice of order for the selector is not significant, so we
431 * use the same descending order for consistency.
433 num = sk_danetls_record_num(dane->trecs);
434 for (i = 0; i < num; ++i) {
435 danetls_record *rec = sk_danetls_record_value(dane->trecs, i);
437 if (rec->usage > usage)
439 if (rec->usage < usage)
441 if (rec->selector > selector)
443 if (rec->selector < selector)
445 if (dane->dctx->mdord[rec->mtype] > dane->dctx->mdord[mtype])
450 if (!sk_danetls_record_insert(dane->trecs, t, i)) {
452 SSLerr(SSL_F_DANE_TLSA_ADD, ERR_R_MALLOC_FAILURE);
455 dane->umask |= DANETLS_USAGE_BIT(usage);
461 * Return 0 if there is only one version configured and it was disabled
462 * at configure time. Return 1 otherwise.
464 static int ssl_check_allowed_versions(int min_version, int max_version)
466 int minisdtls = 0, maxisdtls = 0;
468 /* Figure out if we're doing DTLS versions or TLS versions */
469 if (min_version == DTLS1_BAD_VER
470 || min_version >> 8 == DTLS1_VERSION_MAJOR)
472 if (max_version == DTLS1_BAD_VER
473 || max_version >> 8 == DTLS1_VERSION_MAJOR)
475 /* A wildcard version of 0 could be DTLS or TLS. */
476 if ((minisdtls && !maxisdtls && max_version != 0)
477 || (maxisdtls && !minisdtls && min_version != 0)) {
478 /* Mixing DTLS and TLS versions will lead to sadness; deny it. */
482 if (minisdtls || maxisdtls) {
483 /* Do DTLS version checks. */
484 if (min_version == 0)
485 /* Ignore DTLS1_BAD_VER */
486 min_version = DTLS1_VERSION;
487 if (max_version == 0)
488 max_version = DTLS1_2_VERSION;
489 #ifdef OPENSSL_NO_DTLS1_2
490 if (max_version == DTLS1_2_VERSION)
491 max_version = DTLS1_VERSION;
493 #ifdef OPENSSL_NO_DTLS1
494 if (min_version == DTLS1_VERSION)
495 min_version = DTLS1_2_VERSION;
497 /* Done massaging versions; do the check. */
499 #ifdef OPENSSL_NO_DTLS1
500 || (DTLS_VERSION_GE(min_version, DTLS1_VERSION)
501 && DTLS_VERSION_GE(DTLS1_VERSION, max_version))
503 #ifdef OPENSSL_NO_DTLS1_2
504 || (DTLS_VERSION_GE(min_version, DTLS1_2_VERSION)
505 && DTLS_VERSION_GE(DTLS1_2_VERSION, max_version))
510 /* Regular TLS version checks. */
511 if (min_version == 0)
512 min_version = SSL3_VERSION;
513 if (max_version == 0)
514 max_version = TLS1_3_VERSION;
515 #ifdef OPENSSL_NO_TLS1_3
516 if (max_version == TLS1_3_VERSION)
517 max_version = TLS1_2_VERSION;
519 #ifdef OPENSSL_NO_TLS1_2
520 if (max_version == TLS1_2_VERSION)
521 max_version = TLS1_1_VERSION;
523 #ifdef OPENSSL_NO_TLS1_1
524 if (max_version == TLS1_1_VERSION)
525 max_version = TLS1_VERSION;
527 #ifdef OPENSSL_NO_TLS1
528 if (max_version == TLS1_VERSION)
529 max_version = SSL3_VERSION;
531 #ifdef OPENSSL_NO_SSL3
532 if (min_version == SSL3_VERSION)
533 min_version = TLS1_VERSION;
535 #ifdef OPENSSL_NO_TLS1
536 if (min_version == TLS1_VERSION)
537 min_version = TLS1_1_VERSION;
539 #ifdef OPENSSL_NO_TLS1_1
540 if (min_version == TLS1_1_VERSION)
541 min_version = TLS1_2_VERSION;
543 #ifdef OPENSSL_NO_TLS1_2
544 if (min_version == TLS1_2_VERSION)
545 min_version = TLS1_3_VERSION;
547 /* Done massaging versions; do the check. */
549 #ifdef OPENSSL_NO_SSL3
550 || (min_version <= SSL3_VERSION && SSL3_VERSION <= max_version)
552 #ifdef OPENSSL_NO_TLS1
553 || (min_version <= TLS1_VERSION && TLS1_VERSION <= max_version)
555 #ifdef OPENSSL_NO_TLS1_1
556 || (min_version <= TLS1_1_VERSION && TLS1_1_VERSION <= max_version)
558 #ifdef OPENSSL_NO_TLS1_2
559 || (min_version <= TLS1_2_VERSION && TLS1_2_VERSION <= max_version)
561 #ifdef OPENSSL_NO_TLS1_3
562 || (min_version <= TLS1_3_VERSION && TLS1_3_VERSION <= max_version)
570 static void clear_ciphers(SSL *s)
572 /* clear the current cipher */
573 ssl_clear_cipher_ctx(s);
574 ssl_clear_hash_ctx(&s->read_hash);
575 ssl_clear_hash_ctx(&s->write_hash);
578 int SSL_clear(SSL *s)
580 if (s->method == NULL) {
581 SSLerr(SSL_F_SSL_CLEAR, SSL_R_NO_METHOD_SPECIFIED);
585 if (ssl_clear_bad_session(s)) {
586 SSL_SESSION_free(s->session);
589 SSL_SESSION_free(s->psksession);
590 s->psksession = NULL;
591 OPENSSL_free(s->psksession_id);
592 s->psksession_id = NULL;
593 s->psksession_id_len = 0;
594 s->hello_retry_request = 0;
601 if (s->renegotiate) {
602 SSLerr(SSL_F_SSL_CLEAR, ERR_R_INTERNAL_ERROR);
606 ossl_statem_clear(s);
608 s->version = s->method->version;
609 s->client_version = s->version;
610 s->rwstate = SSL_NOTHING;
612 BUF_MEM_free(s->init_buf);
617 s->key_update = SSL_KEY_UPDATE_NONE;
619 EVP_MD_CTX_free(s->pha_dgst);
622 /* Reset DANE verification result state */
625 X509_free(s->dane.mcert);
626 s->dane.mcert = NULL;
627 s->dane.mtlsa = NULL;
629 /* Clear the verification result peername */
630 X509_VERIFY_PARAM_move_peername(s->param, NULL);
632 /* Clear any shared connection state */
633 OPENSSL_free(s->shared_sigalgs);
634 s->shared_sigalgs = NULL;
635 s->shared_sigalgslen = 0;
638 * Check to see if we were changed into a different method, if so, revert
641 if (s->method != s->ctx->method) {
642 s->method->ssl_free(s);
643 s->method = s->ctx->method;
644 if (!s->method->ssl_new(s))
647 if (!s->method->ssl_clear(s))
651 RECORD_LAYER_clear(&s->rlayer);
656 /** Used to change an SSL_CTXs default SSL method type */
657 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *meth)
659 STACK_OF(SSL_CIPHER) *sk;
663 if (!SSL_CTX_set_ciphersuites(ctx, OSSL_default_ciphersuites())) {
664 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
667 sk = ssl_create_cipher_list(ctx->method,
668 ctx->tls13_ciphersuites,
670 &(ctx->cipher_list_by_id),
671 OSSL_default_cipher_list(), ctx->cert);
672 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= 0)) {
673 SSLerr(SSL_F_SSL_CTX_SET_SSL_VERSION, SSL_R_SSL_LIBRARY_HAS_NO_CIPHERS);
679 SSL *SSL_new(SSL_CTX *ctx)
684 SSLerr(SSL_F_SSL_NEW, SSL_R_NULL_SSL_CTX);
687 if (ctx->method == NULL) {
688 SSLerr(SSL_F_SSL_NEW, SSL_R_SSL_CTX_HAS_NO_DEFAULT_SSL_VERSION);
692 s = OPENSSL_zalloc(sizeof(*s));
697 s->lock = CRYPTO_THREAD_lock_new();
698 if (s->lock == NULL) {
704 RECORD_LAYER_init(&s->rlayer, s);
706 s->options = ctx->options;
707 s->dane.flags = ctx->dane.flags;
708 s->min_proto_version = ctx->min_proto_version;
709 s->max_proto_version = ctx->max_proto_version;
711 s->max_cert_list = ctx->max_cert_list;
712 s->max_early_data = ctx->max_early_data;
713 s->recv_max_early_data = ctx->recv_max_early_data;
714 s->num_tickets = ctx->num_tickets;
715 s->pha_enabled = ctx->pha_enabled;
717 /* Shallow copy of the ciphersuites stack */
718 s->tls13_ciphersuites = sk_SSL_CIPHER_dup(ctx->tls13_ciphersuites);
719 if (s->tls13_ciphersuites == NULL)
723 * Earlier library versions used to copy the pointer to the CERT, not
724 * its contents; only when setting new parameters for the per-SSL
725 * copy, ssl_cert_new would be called (and the direct reference to
726 * the per-SSL_CTX settings would be lost, but those still were
727 * indirectly accessed for various purposes, and for that reason they
728 * used to be known as s->ctx->default_cert). Now we don't look at the
729 * SSL_CTX's CERT after having duplicated it once.
731 s->cert = ssl_cert_dup(ctx->cert);
735 RECORD_LAYER_set_read_ahead(&s->rlayer, ctx->read_ahead);
736 s->msg_callback = ctx->msg_callback;
737 s->msg_callback_arg = ctx->msg_callback_arg;
738 s->verify_mode = ctx->verify_mode;
739 s->not_resumable_session_cb = ctx->not_resumable_session_cb;
740 s->record_padding_cb = ctx->record_padding_cb;
741 s->record_padding_arg = ctx->record_padding_arg;
742 s->block_padding = ctx->block_padding;
743 s->sid_ctx_length = ctx->sid_ctx_length;
744 if (!ossl_assert(s->sid_ctx_length <= sizeof(s->sid_ctx)))
746 memcpy(&s->sid_ctx, &ctx->sid_ctx, sizeof(s->sid_ctx));
747 s->verify_callback = ctx->default_verify_callback;
748 s->generate_session_id = ctx->generate_session_id;
750 s->param = X509_VERIFY_PARAM_new();
751 if (s->param == NULL)
753 X509_VERIFY_PARAM_inherit(s->param, ctx->param);
754 s->quiet_shutdown = ctx->quiet_shutdown;
756 s->ext.max_fragment_len_mode = ctx->ext.max_fragment_len_mode;
757 s->max_send_fragment = ctx->max_send_fragment;
758 s->split_send_fragment = ctx->split_send_fragment;
759 s->max_pipelines = ctx->max_pipelines;
760 if (s->max_pipelines > 1)
761 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
762 if (ctx->default_read_buf_len > 0)
763 SSL_set_default_read_buffer_len(s, ctx->default_read_buf_len);
768 s->ext.debug_arg = NULL;
769 s->ext.ticket_expected = 0;
770 s->ext.status_type = ctx->ext.status_type;
771 s->ext.status_expected = 0;
772 s->ext.ocsp.ids = NULL;
773 s->ext.ocsp.exts = NULL;
774 s->ext.ocsp.resp = NULL;
775 s->ext.ocsp.resp_len = 0;
777 s->session_ctx = ctx;
778 #ifndef OPENSSL_NO_EC
779 if (ctx->ext.ecpointformats) {
780 s->ext.ecpointformats =
781 OPENSSL_memdup(ctx->ext.ecpointformats,
782 ctx->ext.ecpointformats_len);
783 if (!s->ext.ecpointformats)
785 s->ext.ecpointformats_len =
786 ctx->ext.ecpointformats_len;
789 if (ctx->ext.supportedgroups) {
790 s->ext.supportedgroups =
791 OPENSSL_memdup(ctx->ext.supportedgroups,
792 ctx->ext.supportedgroups_len
793 * sizeof(*ctx->ext.supportedgroups));
794 if (!s->ext.supportedgroups)
796 s->ext.supportedgroups_len = ctx->ext.supportedgroups_len;
799 #ifndef OPENSSL_NO_NEXTPROTONEG
803 if (s->ctx->ext.alpn) {
804 s->ext.alpn = OPENSSL_malloc(s->ctx->ext.alpn_len);
805 if (s->ext.alpn == NULL)
807 memcpy(s->ext.alpn, s->ctx->ext.alpn, s->ctx->ext.alpn_len);
808 s->ext.alpn_len = s->ctx->ext.alpn_len;
811 s->verified_chain = NULL;
812 s->verify_result = X509_V_OK;
814 s->default_passwd_callback = ctx->default_passwd_callback;
815 s->default_passwd_callback_userdata = ctx->default_passwd_callback_userdata;
817 s->method = ctx->method;
819 s->key_update = SSL_KEY_UPDATE_NONE;
821 s->allow_early_data_cb = ctx->allow_early_data_cb;
822 s->allow_early_data_cb_data = ctx->allow_early_data_cb_data;
824 if (!s->method->ssl_new(s))
827 s->server = (ctx->method->ssl_accept == ssl_undefined_function) ? 0 : 1;
832 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data))
835 #ifndef OPENSSL_NO_PSK
836 s->psk_client_callback = ctx->psk_client_callback;
837 s->psk_server_callback = ctx->psk_server_callback;
839 s->psk_find_session_cb = ctx->psk_find_session_cb;
840 s->psk_use_session_cb = ctx->psk_use_session_cb;
842 s->async_cb = ctx->async_cb;
843 s->async_cb_arg = ctx->async_cb_arg;
847 #ifndef OPENSSL_NO_CT
848 if (!SSL_set_ct_validation_callback(s, ctx->ct_validation_callback,
849 ctx->ct_validation_callback_arg))
856 SSLerr(SSL_F_SSL_NEW, ERR_R_MALLOC_FAILURE);
860 int SSL_is_dtls(const SSL *s)
862 return SSL_IS_DTLS(s) ? 1 : 0;
865 int SSL_up_ref(SSL *s)
869 if (CRYPTO_UP_REF(&s->references, &i, s->lock) <= 0)
872 REF_PRINT_COUNT("SSL", s);
873 REF_ASSERT_ISNT(i < 2);
874 return ((i > 1) ? 1 : 0);
877 int SSL_CTX_set_session_id_context(SSL_CTX *ctx, const unsigned char *sid_ctx,
878 unsigned int sid_ctx_len)
880 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
881 SSLerr(SSL_F_SSL_CTX_SET_SESSION_ID_CONTEXT,
882 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
885 ctx->sid_ctx_length = sid_ctx_len;
886 memcpy(ctx->sid_ctx, sid_ctx, sid_ctx_len);
891 int SSL_set_session_id_context(SSL *ssl, const unsigned char *sid_ctx,
892 unsigned int sid_ctx_len)
894 if (sid_ctx_len > SSL_MAX_SID_CTX_LENGTH) {
895 SSLerr(SSL_F_SSL_SET_SESSION_ID_CONTEXT,
896 SSL_R_SSL_SESSION_ID_CONTEXT_TOO_LONG);
899 ssl->sid_ctx_length = sid_ctx_len;
900 memcpy(ssl->sid_ctx, sid_ctx, sid_ctx_len);
905 int SSL_CTX_set_generate_session_id(SSL_CTX *ctx, GEN_SESSION_CB cb)
907 CRYPTO_THREAD_write_lock(ctx->lock);
908 ctx->generate_session_id = cb;
909 CRYPTO_THREAD_unlock(ctx->lock);
913 int SSL_set_generate_session_id(SSL *ssl, GEN_SESSION_CB cb)
915 CRYPTO_THREAD_write_lock(ssl->lock);
916 ssl->generate_session_id = cb;
917 CRYPTO_THREAD_unlock(ssl->lock);
921 int SSL_has_matching_session_id(const SSL *ssl, const unsigned char *id,
925 * A quick examination of SSL_SESSION_hash and SSL_SESSION_cmp shows how
926 * we can "construct" a session to give us the desired check - i.e. to
927 * find if there's a session in the hash table that would conflict with
928 * any new session built out of this id/id_len and the ssl_version in use
933 if (id_len > sizeof(r.session_id))
936 r.ssl_version = ssl->version;
937 r.session_id_length = id_len;
938 memcpy(r.session_id, id, id_len);
940 CRYPTO_THREAD_read_lock(ssl->session_ctx->lock);
941 p = lh_SSL_SESSION_retrieve(ssl->session_ctx->sessions, &r);
942 CRYPTO_THREAD_unlock(ssl->session_ctx->lock);
946 int SSL_CTX_set_purpose(SSL_CTX *s, int purpose)
948 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
951 int SSL_set_purpose(SSL *s, int purpose)
953 return X509_VERIFY_PARAM_set_purpose(s->param, purpose);
956 int SSL_CTX_set_trust(SSL_CTX *s, int trust)
958 return X509_VERIFY_PARAM_set_trust(s->param, trust);
961 int SSL_set_trust(SSL *s, int trust)
963 return X509_VERIFY_PARAM_set_trust(s->param, trust);
966 int SSL_set1_host(SSL *s, const char *hostname)
968 return X509_VERIFY_PARAM_set1_host(s->param, hostname, 0);
971 int SSL_add1_host(SSL *s, const char *hostname)
973 return X509_VERIFY_PARAM_add1_host(s->param, hostname, 0);
976 void SSL_set_hostflags(SSL *s, unsigned int flags)
978 X509_VERIFY_PARAM_set_hostflags(s->param, flags);
981 const char *SSL_get0_peername(SSL *s)
983 return X509_VERIFY_PARAM_get0_peername(s->param);
986 int SSL_CTX_dane_enable(SSL_CTX *ctx)
988 return dane_ctx_enable(&ctx->dane);
991 unsigned long SSL_CTX_dane_set_flags(SSL_CTX *ctx, unsigned long flags)
993 unsigned long orig = ctx->dane.flags;
995 ctx->dane.flags |= flags;
999 unsigned long SSL_CTX_dane_clear_flags(SSL_CTX *ctx, unsigned long flags)
1001 unsigned long orig = ctx->dane.flags;
1003 ctx->dane.flags &= ~flags;
1007 int SSL_dane_enable(SSL *s, const char *basedomain)
1009 SSL_DANE *dane = &s->dane;
1011 if (s->ctx->dane.mdmax == 0) {
1012 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_CONTEXT_NOT_DANE_ENABLED);
1015 if (dane->trecs != NULL) {
1016 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_DANE_ALREADY_ENABLED);
1021 * Default SNI name. This rejects empty names, while set1_host below
1022 * accepts them and disables host name checks. To avoid side-effects with
1023 * invalid input, set the SNI name first.
1025 if (s->ext.hostname == NULL) {
1026 if (!SSL_set_tlsext_host_name(s, basedomain)) {
1027 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1032 /* Primary RFC6125 reference identifier */
1033 if (!X509_VERIFY_PARAM_set1_host(s->param, basedomain, 0)) {
1034 SSLerr(SSL_F_SSL_DANE_ENABLE, SSL_R_ERROR_SETTING_TLSA_BASE_DOMAIN);
1040 dane->dctx = &s->ctx->dane;
1041 dane->trecs = sk_danetls_record_new_null();
1043 if (dane->trecs == NULL) {
1044 SSLerr(SSL_F_SSL_DANE_ENABLE, ERR_R_MALLOC_FAILURE);
1050 unsigned long SSL_dane_set_flags(SSL *ssl, unsigned long flags)
1052 unsigned long orig = ssl->dane.flags;
1054 ssl->dane.flags |= flags;
1058 unsigned long SSL_dane_clear_flags(SSL *ssl, unsigned long flags)
1060 unsigned long orig = ssl->dane.flags;
1062 ssl->dane.flags &= ~flags;
1066 int SSL_get0_dane_authority(SSL *s, X509 **mcert, EVP_PKEY **mspki)
1068 SSL_DANE *dane = &s->dane;
1070 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1074 *mcert = dane->mcert;
1076 *mspki = (dane->mcert == NULL) ? dane->mtlsa->spki : NULL;
1081 int SSL_get0_dane_tlsa(SSL *s, uint8_t *usage, uint8_t *selector,
1082 uint8_t *mtype, unsigned const char **data, size_t *dlen)
1084 SSL_DANE *dane = &s->dane;
1086 if (!DANETLS_ENABLED(dane) || s->verify_result != X509_V_OK)
1090 *usage = dane->mtlsa->usage;
1092 *selector = dane->mtlsa->selector;
1094 *mtype = dane->mtlsa->mtype;
1096 *data = dane->mtlsa->data;
1098 *dlen = dane->mtlsa->dlen;
1103 SSL_DANE *SSL_get0_dane(SSL *s)
1108 int SSL_dane_tlsa_add(SSL *s, uint8_t usage, uint8_t selector,
1109 uint8_t mtype, unsigned const char *data, size_t dlen)
1111 return dane_tlsa_add(&s->dane, usage, selector, mtype, data, dlen);
1114 int SSL_CTX_dane_mtype_set(SSL_CTX *ctx, const EVP_MD *md, uint8_t mtype,
1117 return dane_mtype_set(&ctx->dane, md, mtype, ord);
1120 int SSL_CTX_set1_param(SSL_CTX *ctx, X509_VERIFY_PARAM *vpm)
1122 return X509_VERIFY_PARAM_set1(ctx->param, vpm);
1125 int SSL_set1_param(SSL *ssl, X509_VERIFY_PARAM *vpm)
1127 return X509_VERIFY_PARAM_set1(ssl->param, vpm);
1130 X509_VERIFY_PARAM *SSL_CTX_get0_param(SSL_CTX *ctx)
1135 X509_VERIFY_PARAM *SSL_get0_param(SSL *ssl)
1140 void SSL_certs_clear(SSL *s)
1142 ssl_cert_clear_certs(s->cert);
1145 void SSL_free(SSL *s)
1151 CRYPTO_DOWN_REF(&s->references, &i, s->lock);
1152 REF_PRINT_COUNT("SSL", s);
1155 REF_ASSERT_ISNT(i < 0);
1157 X509_VERIFY_PARAM_free(s->param);
1158 dane_final(&s->dane);
1159 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL, s, &s->ex_data);
1161 RECORD_LAYER_release(&s->rlayer);
1163 /* Ignore return value */
1164 ssl_free_wbio_buffer(s);
1166 BIO_free_all(s->wbio);
1168 BIO_free_all(s->rbio);
1171 BUF_MEM_free(s->init_buf);
1173 /* add extra stuff */
1174 sk_SSL_CIPHER_free(s->cipher_list);
1175 sk_SSL_CIPHER_free(s->cipher_list_by_id);
1176 sk_SSL_CIPHER_free(s->tls13_ciphersuites);
1177 sk_SSL_CIPHER_free(s->peer_ciphers);
1179 /* Make the next call work :-) */
1180 if (s->session != NULL) {
1181 ssl_clear_bad_session(s);
1182 SSL_SESSION_free(s->session);
1184 SSL_SESSION_free(s->psksession);
1185 OPENSSL_free(s->psksession_id);
1189 ssl_cert_free(s->cert);
1190 OPENSSL_free(s->shared_sigalgs);
1191 /* Free up if allocated */
1193 OPENSSL_free(s->ext.hostname);
1194 SSL_CTX_free(s->session_ctx);
1195 #ifndef OPENSSL_NO_EC
1196 OPENSSL_free(s->ext.ecpointformats);
1197 OPENSSL_free(s->ext.peer_ecpointformats);
1198 #endif /* OPENSSL_NO_EC */
1199 OPENSSL_free(s->ext.supportedgroups);
1200 OPENSSL_free(s->ext.peer_supportedgroups);
1201 sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts, X509_EXTENSION_free);
1202 #ifndef OPENSSL_NO_OCSP
1203 sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
1205 #ifndef OPENSSL_NO_CT
1206 SCT_LIST_free(s->scts);
1207 OPENSSL_free(s->ext.scts);
1209 OPENSSL_free(s->ext.ocsp.resp);
1210 OPENSSL_free(s->ext.alpn);
1211 OPENSSL_free(s->ext.tls13_cookie);
1212 OPENSSL_free(s->clienthello);
1213 OPENSSL_free(s->pha_context);
1214 EVP_MD_CTX_free(s->pha_dgst);
1216 sk_X509_NAME_pop_free(s->ca_names, X509_NAME_free);
1217 sk_X509_NAME_pop_free(s->client_ca_names, X509_NAME_free);
1219 sk_X509_pop_free(s->verified_chain, X509_free);
1221 if (s->method != NULL)
1222 s->method->ssl_free(s);
1224 SSL_CTX_free(s->ctx);
1226 ASYNC_WAIT_CTX_free(s->waitctx);
1228 #if !defined(OPENSSL_NO_NEXTPROTONEG)
1229 OPENSSL_free(s->ext.npn);
1232 #ifndef OPENSSL_NO_SRTP
1233 sk_SRTP_PROTECTION_PROFILE_free(s->srtp_profiles);
1236 CRYPTO_THREAD_lock_free(s->lock);
1241 void SSL_set0_rbio(SSL *s, BIO *rbio)
1243 BIO_free_all(s->rbio);
1247 void SSL_set0_wbio(SSL *s, BIO *wbio)
1250 * If the output buffering BIO is still in place, remove it
1252 if (s->bbio != NULL)
1253 s->wbio = BIO_pop(s->wbio);
1255 BIO_free_all(s->wbio);
1258 /* Re-attach |bbio| to the new |wbio|. */
1259 if (s->bbio != NULL)
1260 s->wbio = BIO_push(s->bbio, s->wbio);
1263 void SSL_set_bio(SSL *s, BIO *rbio, BIO *wbio)
1266 * For historical reasons, this function has many different cases in
1267 * ownership handling.
1270 /* If nothing has changed, do nothing */
1271 if (rbio == SSL_get_rbio(s) && wbio == SSL_get_wbio(s))
1275 * If the two arguments are equal then one fewer reference is granted by the
1276 * caller than we want to take
1278 if (rbio != NULL && rbio == wbio)
1282 * If only the wbio is changed only adopt one reference.
1284 if (rbio == SSL_get_rbio(s)) {
1285 SSL_set0_wbio(s, wbio);
1289 * There is an asymmetry here for historical reasons. If only the rbio is
1290 * changed AND the rbio and wbio were originally different, then we only
1291 * adopt one reference.
1293 if (wbio == SSL_get_wbio(s) && SSL_get_rbio(s) != SSL_get_wbio(s)) {
1294 SSL_set0_rbio(s, rbio);
1298 /* Otherwise, adopt both references. */
1299 SSL_set0_rbio(s, rbio);
1300 SSL_set0_wbio(s, wbio);
1303 BIO *SSL_get_rbio(const SSL *s)
1308 BIO *SSL_get_wbio(const SSL *s)
1310 if (s->bbio != NULL) {
1312 * If |bbio| is active, the true caller-configured BIO is its
1315 return BIO_next(s->bbio);
1320 int SSL_get_fd(const SSL *s)
1322 return SSL_get_rfd(s);
1325 int SSL_get_rfd(const SSL *s)
1330 b = SSL_get_rbio(s);
1331 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1333 BIO_get_fd(r, &ret);
1337 int SSL_get_wfd(const SSL *s)
1342 b = SSL_get_wbio(s);
1343 r = BIO_find_type(b, BIO_TYPE_DESCRIPTOR);
1345 BIO_get_fd(r, &ret);
1349 #ifndef OPENSSL_NO_SOCK
1350 int SSL_set_fd(SSL *s, int fd)
1355 bio = BIO_new(BIO_s_socket());
1358 SSLerr(SSL_F_SSL_SET_FD, ERR_R_BUF_LIB);
1361 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1362 SSL_set_bio(s, bio, bio);
1363 #ifndef OPENSSL_NO_KTLS
1365 * The new socket is created successfully regardless of ktls_enable.
1366 * ktls_enable doesn't change any functionality of the socket, except
1367 * changing the setsockopt to enable the processing of ktls_start.
1368 * Thus, it is not a problem to call it for non-TLS sockets.
1371 #endif /* OPENSSL_NO_KTLS */
1377 int SSL_set_wfd(SSL *s, int fd)
1379 BIO *rbio = SSL_get_rbio(s);
1381 if (rbio == NULL || BIO_method_type(rbio) != BIO_TYPE_SOCKET
1382 || (int)BIO_get_fd(rbio, NULL) != fd) {
1383 BIO *bio = BIO_new(BIO_s_socket());
1386 SSLerr(SSL_F_SSL_SET_WFD, ERR_R_BUF_LIB);
1389 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1390 SSL_set0_wbio(s, bio);
1391 #ifndef OPENSSL_NO_KTLS
1393 * The new socket is created successfully regardless of ktls_enable.
1394 * ktls_enable doesn't change any functionality of the socket, except
1395 * changing the setsockopt to enable the processing of ktls_start.
1396 * Thus, it is not a problem to call it for non-TLS sockets.
1399 #endif /* OPENSSL_NO_KTLS */
1402 SSL_set0_wbio(s, rbio);
1407 int SSL_set_rfd(SSL *s, int fd)
1409 BIO *wbio = SSL_get_wbio(s);
1411 if (wbio == NULL || BIO_method_type(wbio) != BIO_TYPE_SOCKET
1412 || ((int)BIO_get_fd(wbio, NULL) != fd)) {
1413 BIO *bio = BIO_new(BIO_s_socket());
1416 SSLerr(SSL_F_SSL_SET_RFD, ERR_R_BUF_LIB);
1419 BIO_set_fd(bio, fd, BIO_NOCLOSE);
1420 SSL_set0_rbio(s, bio);
1423 SSL_set0_rbio(s, wbio);
1430 /* return length of latest Finished message we sent, copy to 'buf' */
1431 size_t SSL_get_finished(const SSL *s, void *buf, size_t count)
1435 ret = s->s3.tmp.finish_md_len;
1438 memcpy(buf, s->s3.tmp.finish_md, count);
1442 /* return length of latest Finished message we expected, copy to 'buf' */
1443 size_t SSL_get_peer_finished(const SSL *s, void *buf, size_t count)
1447 ret = s->s3.tmp.peer_finish_md_len;
1450 memcpy(buf, s->s3.tmp.peer_finish_md, count);
1454 int SSL_get_verify_mode(const SSL *s)
1456 return s->verify_mode;
1459 int SSL_get_verify_depth(const SSL *s)
1461 return X509_VERIFY_PARAM_get_depth(s->param);
1464 int (*SSL_get_verify_callback(const SSL *s)) (int, X509_STORE_CTX *) {
1465 return s->verify_callback;
1468 int SSL_CTX_get_verify_mode(const SSL_CTX *ctx)
1470 return ctx->verify_mode;
1473 int SSL_CTX_get_verify_depth(const SSL_CTX *ctx)
1475 return X509_VERIFY_PARAM_get_depth(ctx->param);
1478 int (*SSL_CTX_get_verify_callback(const SSL_CTX *ctx)) (int, X509_STORE_CTX *) {
1479 return ctx->default_verify_callback;
1482 void SSL_set_verify(SSL *s, int mode,
1483 int (*callback) (int ok, X509_STORE_CTX *ctx))
1485 s->verify_mode = mode;
1486 if (callback != NULL)
1487 s->verify_callback = callback;
1490 void SSL_set_verify_depth(SSL *s, int depth)
1492 X509_VERIFY_PARAM_set_depth(s->param, depth);
1495 void SSL_set_read_ahead(SSL *s, int yes)
1497 RECORD_LAYER_set_read_ahead(&s->rlayer, yes);
1500 int SSL_get_read_ahead(const SSL *s)
1502 return RECORD_LAYER_get_read_ahead(&s->rlayer);
1505 int SSL_pending(const SSL *s)
1507 size_t pending = s->method->ssl_pending(s);
1510 * SSL_pending cannot work properly if read-ahead is enabled
1511 * (SSL_[CTX_]ctrl(..., SSL_CTRL_SET_READ_AHEAD, 1, NULL)), and it is
1512 * impossible to fix since SSL_pending cannot report errors that may be
1513 * observed while scanning the new data. (Note that SSL_pending() is
1514 * often used as a boolean value, so we'd better not return -1.)
1516 * SSL_pending also cannot work properly if the value >INT_MAX. In that case
1517 * we just return INT_MAX.
1519 return pending < INT_MAX ? (int)pending : INT_MAX;
1522 int SSL_has_pending(const SSL *s)
1525 * Similar to SSL_pending() but returns a 1 to indicate that we have
1526 * unprocessed data available or 0 otherwise (as opposed to the number of
1527 * bytes available). Unlike SSL_pending() this will take into account
1528 * read_ahead data. A 1 return simply indicates that we have unprocessed
1529 * data. That data may not result in any application data, or we may fail
1530 * to parse the records for some reason.
1532 if (RECORD_LAYER_processed_read_pending(&s->rlayer))
1535 return RECORD_LAYER_read_pending(&s->rlayer);
1538 X509 *SSL_get_peer_certificate(const SSL *s)
1542 if ((s == NULL) || (s->session == NULL))
1545 r = s->session->peer;
1555 STACK_OF(X509) *SSL_get_peer_cert_chain(const SSL *s)
1559 if ((s == NULL) || (s->session == NULL))
1562 r = s->session->peer_chain;
1565 * If we are a client, cert_chain includes the peer's own certificate; if
1566 * we are a server, it does not.
1573 * Now in theory, since the calling process own 't' it should be safe to
1574 * modify. We need to be able to read f without being hassled
1576 int SSL_copy_session_id(SSL *t, const SSL *f)
1579 /* Do we need to to SSL locking? */
1580 if (!SSL_set_session(t, SSL_get_session(f))) {
1585 * what if we are setup for one protocol version but want to talk another
1587 if (t->method != f->method) {
1588 t->method->ssl_free(t);
1589 t->method = f->method;
1590 if (t->method->ssl_new(t) == 0)
1594 CRYPTO_UP_REF(&f->cert->references, &i, f->cert->lock);
1595 ssl_cert_free(t->cert);
1597 if (!SSL_set_session_id_context(t, f->sid_ctx, (int)f->sid_ctx_length)) {
1604 /* Fix this so it checks all the valid key/cert options */
1605 int SSL_CTX_check_private_key(const SSL_CTX *ctx)
1607 if ((ctx == NULL) || (ctx->cert->key->x509 == NULL)) {
1608 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1611 if (ctx->cert->key->privatekey == NULL) {
1612 SSLerr(SSL_F_SSL_CTX_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1615 return X509_check_private_key
1616 (ctx->cert->key->x509, ctx->cert->key->privatekey);
1619 /* Fix this function so that it takes an optional type parameter */
1620 int SSL_check_private_key(const SSL *ssl)
1623 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, ERR_R_PASSED_NULL_PARAMETER);
1626 if (ssl->cert->key->x509 == NULL) {
1627 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_CERTIFICATE_ASSIGNED);
1630 if (ssl->cert->key->privatekey == NULL) {
1631 SSLerr(SSL_F_SSL_CHECK_PRIVATE_KEY, SSL_R_NO_PRIVATE_KEY_ASSIGNED);
1634 return X509_check_private_key(ssl->cert->key->x509,
1635 ssl->cert->key->privatekey);
1638 int SSL_waiting_for_async(SSL *s)
1646 int SSL_get_all_async_fds(SSL *s, OSSL_ASYNC_FD *fds, size_t *numfds)
1648 ASYNC_WAIT_CTX *ctx = s->waitctx;
1652 return ASYNC_WAIT_CTX_get_all_fds(ctx, fds, numfds);
1655 int SSL_get_changed_async_fds(SSL *s, OSSL_ASYNC_FD *addfd, size_t *numaddfds,
1656 OSSL_ASYNC_FD *delfd, size_t *numdelfds)
1658 ASYNC_WAIT_CTX *ctx = s->waitctx;
1662 return ASYNC_WAIT_CTX_get_changed_fds(ctx, addfd, numaddfds, delfd,
1666 int SSL_CTX_set_async_callback(SSL_CTX *ctx, SSL_async_callback_fn callback)
1668 ctx->async_cb = callback;
1672 int SSL_CTX_set_async_callback_arg(SSL_CTX *ctx, void *arg)
1674 ctx->async_cb_arg = arg;
1678 int SSL_set_async_callback(SSL *s, SSL_async_callback_fn callback)
1680 s->async_cb = callback;
1684 int SSL_set_async_callback_arg(SSL *s, void *arg)
1686 s->async_cb_arg = arg;
1690 int SSL_get_async_status(SSL *s, int *status)
1692 ASYNC_WAIT_CTX *ctx = s->waitctx;
1696 *status = ASYNC_WAIT_CTX_get_status(ctx);
1700 int SSL_accept(SSL *s)
1702 if (s->handshake_func == NULL) {
1703 /* Not properly initialized yet */
1704 SSL_set_accept_state(s);
1707 return SSL_do_handshake(s);
1710 int SSL_connect(SSL *s)
1712 if (s->handshake_func == NULL) {
1713 /* Not properly initialized yet */
1714 SSL_set_connect_state(s);
1717 return SSL_do_handshake(s);
1720 long SSL_get_default_timeout(const SSL *s)
1722 return s->method->get_timeout();
1725 static int ssl_async_wait_ctx_cb(void *arg)
1727 SSL *s = (SSL *)arg;
1729 return s->async_cb(s, s->async_cb_arg);
1732 static int ssl_start_async_job(SSL *s, struct ssl_async_args *args,
1733 int (*func) (void *))
1736 if (s->waitctx == NULL) {
1737 s->waitctx = ASYNC_WAIT_CTX_new();
1738 if (s->waitctx == NULL)
1740 if (s->async_cb != NULL
1741 && !ASYNC_WAIT_CTX_set_callback
1742 (s->waitctx, ssl_async_wait_ctx_cb, s))
1745 switch (ASYNC_start_job(&s->job, s->waitctx, &ret, func, args,
1746 sizeof(struct ssl_async_args))) {
1748 s->rwstate = SSL_NOTHING;
1749 SSLerr(SSL_F_SSL_START_ASYNC_JOB, SSL_R_FAILED_TO_INIT_ASYNC);
1752 s->rwstate = SSL_ASYNC_PAUSED;
1755 s->rwstate = SSL_ASYNC_NO_JOBS;
1761 s->rwstate = SSL_NOTHING;
1762 SSLerr(SSL_F_SSL_START_ASYNC_JOB, ERR_R_INTERNAL_ERROR);
1763 /* Shouldn't happen */
1768 static int ssl_io_intern(void *vargs)
1770 struct ssl_async_args *args;
1775 args = (struct ssl_async_args *)vargs;
1779 switch (args->type) {
1781 return args->f.func_read(s, buf, num, &s->asyncrw);
1783 return args->f.func_write(s, buf, num, &s->asyncrw);
1785 return args->f.func_other(s);
1790 int ssl_read_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1792 if (s->handshake_func == NULL) {
1793 SSLerr(SSL_F_SSL_READ_INTERNAL, SSL_R_UNINITIALIZED);
1797 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1798 s->rwstate = SSL_NOTHING;
1802 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1803 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY) {
1804 SSLerr(SSL_F_SSL_READ_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1808 * If we are a client and haven't received the ServerHello etc then we
1811 ossl_statem_check_finish_init(s, 0);
1813 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1814 struct ssl_async_args args;
1820 args.type = READFUNC;
1821 args.f.func_read = s->method->ssl_read;
1823 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1824 *readbytes = s->asyncrw;
1827 return s->method->ssl_read(s, buf, num, readbytes);
1831 int SSL_read(SSL *s, void *buf, int num)
1837 SSLerr(SSL_F_SSL_READ, SSL_R_BAD_LENGTH);
1841 ret = ssl_read_internal(s, buf, (size_t)num, &readbytes);
1844 * The cast is safe here because ret should be <= INT_MAX because num is
1848 ret = (int)readbytes;
1853 int SSL_read_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1855 int ret = ssl_read_internal(s, buf, num, readbytes);
1862 int SSL_read_early_data(SSL *s, void *buf, size_t num, size_t *readbytes)
1867 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1868 return SSL_READ_EARLY_DATA_ERROR;
1871 switch (s->early_data_state) {
1872 case SSL_EARLY_DATA_NONE:
1873 if (!SSL_in_before(s)) {
1874 SSLerr(SSL_F_SSL_READ_EARLY_DATA,
1875 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1876 return SSL_READ_EARLY_DATA_ERROR;
1880 case SSL_EARLY_DATA_ACCEPT_RETRY:
1881 s->early_data_state = SSL_EARLY_DATA_ACCEPTING;
1882 ret = SSL_accept(s);
1885 s->early_data_state = SSL_EARLY_DATA_ACCEPT_RETRY;
1886 return SSL_READ_EARLY_DATA_ERROR;
1890 case SSL_EARLY_DATA_READ_RETRY:
1891 if (s->ext.early_data == SSL_EARLY_DATA_ACCEPTED) {
1892 s->early_data_state = SSL_EARLY_DATA_READING;
1893 ret = SSL_read_ex(s, buf, num, readbytes);
1895 * State machine will update early_data_state to
1896 * SSL_EARLY_DATA_FINISHED_READING if we get an EndOfEarlyData
1899 if (ret > 0 || (ret <= 0 && s->early_data_state
1900 != SSL_EARLY_DATA_FINISHED_READING)) {
1901 s->early_data_state = SSL_EARLY_DATA_READ_RETRY;
1902 return ret > 0 ? SSL_READ_EARLY_DATA_SUCCESS
1903 : SSL_READ_EARLY_DATA_ERROR;
1906 s->early_data_state = SSL_EARLY_DATA_FINISHED_READING;
1909 return SSL_READ_EARLY_DATA_FINISH;
1912 SSLerr(SSL_F_SSL_READ_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
1913 return SSL_READ_EARLY_DATA_ERROR;
1917 int SSL_get_early_data_status(const SSL *s)
1919 return s->ext.early_data;
1922 static int ssl_peek_internal(SSL *s, void *buf, size_t num, size_t *readbytes)
1924 if (s->handshake_func == NULL) {
1925 SSLerr(SSL_F_SSL_PEEK_INTERNAL, SSL_R_UNINITIALIZED);
1929 if (s->shutdown & SSL_RECEIVED_SHUTDOWN) {
1932 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
1933 struct ssl_async_args args;
1939 args.type = READFUNC;
1940 args.f.func_read = s->method->ssl_peek;
1942 ret = ssl_start_async_job(s, &args, ssl_io_intern);
1943 *readbytes = s->asyncrw;
1946 return s->method->ssl_peek(s, buf, num, readbytes);
1950 int SSL_peek(SSL *s, void *buf, int num)
1956 SSLerr(SSL_F_SSL_PEEK, SSL_R_BAD_LENGTH);
1960 ret = ssl_peek_internal(s, buf, (size_t)num, &readbytes);
1963 * The cast is safe here because ret should be <= INT_MAX because num is
1967 ret = (int)readbytes;
1973 int SSL_peek_ex(SSL *s, void *buf, size_t num, size_t *readbytes)
1975 int ret = ssl_peek_internal(s, buf, num, readbytes);
1982 int ssl_write_internal(SSL *s, const void *buf, size_t num, size_t *written)
1984 if (s->handshake_func == NULL) {
1985 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_UNINITIALIZED);
1989 if (s->shutdown & SSL_SENT_SHUTDOWN) {
1990 s->rwstate = SSL_NOTHING;
1991 SSLerr(SSL_F_SSL_WRITE_INTERNAL, SSL_R_PROTOCOL_IS_SHUTDOWN);
1995 if (s->early_data_state == SSL_EARLY_DATA_CONNECT_RETRY
1996 || s->early_data_state == SSL_EARLY_DATA_ACCEPT_RETRY
1997 || s->early_data_state == SSL_EARLY_DATA_READ_RETRY) {
1998 SSLerr(SSL_F_SSL_WRITE_INTERNAL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2001 /* If we are a client and haven't sent the Finished we better do that */
2002 ossl_statem_check_finish_init(s, 1);
2004 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2006 struct ssl_async_args args;
2009 args.buf = (void *)buf;
2011 args.type = WRITEFUNC;
2012 args.f.func_write = s->method->ssl_write;
2014 ret = ssl_start_async_job(s, &args, ssl_io_intern);
2015 *written = s->asyncrw;
2018 return s->method->ssl_write(s, buf, num, written);
2022 ossl_ssize_t SSL_sendfile(SSL *s, int fd, off_t offset, size_t size, int flags)
2026 if (s->handshake_func == NULL) {
2027 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2031 if (s->shutdown & SSL_SENT_SHUTDOWN) {
2032 s->rwstate = SSL_NOTHING;
2033 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_PROTOCOL_IS_SHUTDOWN);
2037 if (!BIO_get_ktls_send(s->wbio)) {
2038 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2042 /* If we have an alert to send, lets send it */
2043 if (s->s3.alert_dispatch) {
2044 ret = (ossl_ssize_t)s->method->ssl_dispatch_alert(s);
2046 /* SSLfatal() already called if appropriate */
2049 /* if it went, fall through and send more stuff */
2052 s->rwstate = SSL_WRITING;
2053 if (BIO_flush(s->wbio) <= 0) {
2054 if (!BIO_should_retry(s->wbio)) {
2055 s->rwstate = SSL_NOTHING;
2058 set_sys_error(EAGAIN);
2064 #ifdef OPENSSL_NO_KTLS
2065 ERR_raise_data(ERR_LIB_SYS, ERR_R_INTERNAL_ERROR, "calling sendfile()");
2068 ret = ktls_sendfile(SSL_get_wfd(s), fd, offset, size, flags);
2070 #if defined(EAGAIN) && defined(EINTR) && defined(EBUSY)
2071 if ((get_last_sys_error() == EAGAIN) ||
2072 (get_last_sys_error() == EINTR) ||
2073 (get_last_sys_error() == EBUSY))
2074 BIO_set_retry_write(s->wbio);
2077 SSLerr(SSL_F_SSL_SENDFILE, SSL_R_UNINITIALIZED);
2080 s->rwstate = SSL_NOTHING;
2085 int SSL_write(SSL *s, const void *buf, int num)
2091 SSLerr(SSL_F_SSL_WRITE, SSL_R_BAD_LENGTH);
2095 ret = ssl_write_internal(s, buf, (size_t)num, &written);
2098 * The cast is safe here because ret should be <= INT_MAX because num is
2107 int SSL_write_ex(SSL *s, const void *buf, size_t num, size_t *written)
2109 int ret = ssl_write_internal(s, buf, num, written);
2116 int SSL_write_early_data(SSL *s, const void *buf, size_t num, size_t *written)
2118 int ret, early_data_state;
2120 uint32_t partialwrite;
2122 switch (s->early_data_state) {
2123 case SSL_EARLY_DATA_NONE:
2125 || !SSL_in_before(s)
2126 || ((s->session == NULL || s->session->ext.max_early_data == 0)
2127 && (s->psk_use_session_cb == NULL))) {
2128 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA,
2129 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2134 case SSL_EARLY_DATA_CONNECT_RETRY:
2135 s->early_data_state = SSL_EARLY_DATA_CONNECTING;
2136 ret = SSL_connect(s);
2139 s->early_data_state = SSL_EARLY_DATA_CONNECT_RETRY;
2144 case SSL_EARLY_DATA_WRITE_RETRY:
2145 s->early_data_state = SSL_EARLY_DATA_WRITING;
2147 * We disable partial write for early data because we don't keep track
2148 * of how many bytes we've written between the SSL_write_ex() call and
2149 * the flush if the flush needs to be retried)
2151 partialwrite = s->mode & SSL_MODE_ENABLE_PARTIAL_WRITE;
2152 s->mode &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
2153 ret = SSL_write_ex(s, buf, num, &writtmp);
2154 s->mode |= partialwrite;
2156 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2159 s->early_data_state = SSL_EARLY_DATA_WRITE_FLUSH;
2162 case SSL_EARLY_DATA_WRITE_FLUSH:
2163 /* The buffering BIO is still in place so we need to flush it */
2164 if (statem_flush(s) != 1)
2167 s->early_data_state = SSL_EARLY_DATA_WRITE_RETRY;
2170 case SSL_EARLY_DATA_FINISHED_READING:
2171 case SSL_EARLY_DATA_READ_RETRY:
2172 early_data_state = s->early_data_state;
2173 /* We are a server writing to an unauthenticated client */
2174 s->early_data_state = SSL_EARLY_DATA_UNAUTH_WRITING;
2175 ret = SSL_write_ex(s, buf, num, written);
2176 /* The buffering BIO is still in place */
2178 (void)BIO_flush(s->wbio);
2179 s->early_data_state = early_data_state;
2183 SSLerr(SSL_F_SSL_WRITE_EARLY_DATA, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
2188 int SSL_shutdown(SSL *s)
2191 * Note that this function behaves differently from what one might
2192 * expect. Return values are 0 for no success (yet), 1 for success; but
2193 * calling it once is usually not enough, even if blocking I/O is used
2194 * (see ssl3_shutdown).
2197 if (s->handshake_func == NULL) {
2198 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_UNINITIALIZED);
2202 if (!SSL_in_init(s)) {
2203 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
2204 struct ssl_async_args args;
2207 args.type = OTHERFUNC;
2208 args.f.func_other = s->method->ssl_shutdown;
2210 return ssl_start_async_job(s, &args, ssl_io_intern);
2212 return s->method->ssl_shutdown(s);
2215 SSLerr(SSL_F_SSL_SHUTDOWN, SSL_R_SHUTDOWN_WHILE_IN_INIT);
2220 int SSL_key_update(SSL *s, int updatetype)
2223 * TODO(TLS1.3): How will applications know whether TLSv1.3 has been
2224 * negotiated, and that it is appropriate to call SSL_key_update() instead
2225 * of SSL_renegotiate().
2227 if (!SSL_IS_TLS13(s)) {
2228 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_WRONG_SSL_VERSION);
2232 if (updatetype != SSL_KEY_UPDATE_NOT_REQUESTED
2233 && updatetype != SSL_KEY_UPDATE_REQUESTED) {
2234 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_INVALID_KEY_UPDATE_TYPE);
2238 if (!SSL_is_init_finished(s)) {
2239 SSLerr(SSL_F_SSL_KEY_UPDATE, SSL_R_STILL_IN_INIT);
2243 ossl_statem_set_in_init(s, 1);
2244 s->key_update = updatetype;
2248 int SSL_get_key_update_type(const SSL *s)
2250 return s->key_update;
2253 int SSL_renegotiate(SSL *s)
2255 if (SSL_IS_TLS13(s)) {
2256 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_WRONG_SSL_VERSION);
2260 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2261 SSLerr(SSL_F_SSL_RENEGOTIATE, SSL_R_NO_RENEGOTIATION);
2268 return s->method->ssl_renegotiate(s);
2271 int SSL_renegotiate_abbreviated(SSL *s)
2273 if (SSL_IS_TLS13(s)) {
2274 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_WRONG_SSL_VERSION);
2278 if ((s->options & SSL_OP_NO_RENEGOTIATION)) {
2279 SSLerr(SSL_F_SSL_RENEGOTIATE_ABBREVIATED, SSL_R_NO_RENEGOTIATION);
2286 return s->method->ssl_renegotiate(s);
2289 int SSL_renegotiate_pending(const SSL *s)
2292 * becomes true when negotiation is requested; false again once a
2293 * handshake has finished
2295 return (s->renegotiate != 0);
2298 long SSL_ctrl(SSL *s, int cmd, long larg, void *parg)
2303 case SSL_CTRL_GET_READ_AHEAD:
2304 return RECORD_LAYER_get_read_ahead(&s->rlayer);
2305 case SSL_CTRL_SET_READ_AHEAD:
2306 l = RECORD_LAYER_get_read_ahead(&s->rlayer);
2307 RECORD_LAYER_set_read_ahead(&s->rlayer, larg);
2310 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2311 s->msg_callback_arg = parg;
2315 return (s->mode |= larg);
2316 case SSL_CTRL_CLEAR_MODE:
2317 return (s->mode &= ~larg);
2318 case SSL_CTRL_GET_MAX_CERT_LIST:
2319 return (long)s->max_cert_list;
2320 case SSL_CTRL_SET_MAX_CERT_LIST:
2323 l = (long)s->max_cert_list;
2324 s->max_cert_list = (size_t)larg;
2326 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2327 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2329 #ifndef OPENSSL_NO_KTLS
2330 if (s->wbio != NULL && BIO_get_ktls_send(s->wbio))
2332 #endif /* OPENSSL_NO_KTLS */
2333 s->max_send_fragment = larg;
2334 if (s->max_send_fragment < s->split_send_fragment)
2335 s->split_send_fragment = s->max_send_fragment;
2337 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2338 if ((size_t)larg > s->max_send_fragment || larg == 0)
2340 s->split_send_fragment = larg;
2342 case SSL_CTRL_SET_MAX_PIPELINES:
2343 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2345 s->max_pipelines = larg;
2347 RECORD_LAYER_set_read_ahead(&s->rlayer, 1);
2349 case SSL_CTRL_GET_RI_SUPPORT:
2350 return s->s3.send_connection_binding;
2351 case SSL_CTRL_CERT_FLAGS:
2352 return (s->cert->cert_flags |= larg);
2353 case SSL_CTRL_CLEAR_CERT_FLAGS:
2354 return (s->cert->cert_flags &= ~larg);
2356 case SSL_CTRL_GET_RAW_CIPHERLIST:
2358 if (s->s3.tmp.ciphers_raw == NULL)
2360 *(unsigned char **)parg = s->s3.tmp.ciphers_raw;
2361 return (int)s->s3.tmp.ciphers_rawlen;
2363 return TLS_CIPHER_LEN;
2365 case SSL_CTRL_GET_EXTMS_SUPPORT:
2366 if (!s->session || SSL_in_init(s) || ossl_statem_get_in_handshake(s))
2368 if (s->session->flags & SSL_SESS_FLAG_EXTMS)
2372 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2373 return ssl_check_allowed_versions(larg, s->max_proto_version)
2374 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2375 &s->min_proto_version);
2376 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2377 return s->min_proto_version;
2378 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2379 return ssl_check_allowed_versions(s->min_proto_version, larg)
2380 && ssl_set_version_bound(s->ctx->method->version, (int)larg,
2381 &s->max_proto_version);
2382 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2383 return s->max_proto_version;
2385 return s->method->ssl_ctrl(s, cmd, larg, parg);
2389 long SSL_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
2392 case SSL_CTRL_SET_MSG_CALLBACK:
2393 s->msg_callback = (void (*)
2394 (int write_p, int version, int content_type,
2395 const void *buf, size_t len, SSL *ssl,
2400 return s->method->ssl_callback_ctrl(s, cmd, fp);
2404 LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx)
2406 return ctx->sessions;
2409 long SSL_CTX_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
2412 /* For some cases with ctx == NULL perform syntax checks */
2415 #ifndef OPENSSL_NO_EC
2416 case SSL_CTRL_SET_GROUPS_LIST:
2417 return tls1_set_groups_list(NULL, NULL, parg);
2419 case SSL_CTRL_SET_SIGALGS_LIST:
2420 case SSL_CTRL_SET_CLIENT_SIGALGS_LIST:
2421 return tls1_set_sigalgs_list(NULL, parg, 0);
2428 case SSL_CTRL_GET_READ_AHEAD:
2429 return ctx->read_ahead;
2430 case SSL_CTRL_SET_READ_AHEAD:
2431 l = ctx->read_ahead;
2432 ctx->read_ahead = larg;
2435 case SSL_CTRL_SET_MSG_CALLBACK_ARG:
2436 ctx->msg_callback_arg = parg;
2439 case SSL_CTRL_GET_MAX_CERT_LIST:
2440 return (long)ctx->max_cert_list;
2441 case SSL_CTRL_SET_MAX_CERT_LIST:
2444 l = (long)ctx->max_cert_list;
2445 ctx->max_cert_list = (size_t)larg;
2448 case SSL_CTRL_SET_SESS_CACHE_SIZE:
2451 l = (long)ctx->session_cache_size;
2452 ctx->session_cache_size = (size_t)larg;
2454 case SSL_CTRL_GET_SESS_CACHE_SIZE:
2455 return (long)ctx->session_cache_size;
2456 case SSL_CTRL_SET_SESS_CACHE_MODE:
2457 l = ctx->session_cache_mode;
2458 ctx->session_cache_mode = larg;
2460 case SSL_CTRL_GET_SESS_CACHE_MODE:
2461 return ctx->session_cache_mode;
2463 case SSL_CTRL_SESS_NUMBER:
2464 return lh_SSL_SESSION_num_items(ctx->sessions);
2465 case SSL_CTRL_SESS_CONNECT:
2466 return tsan_load(&ctx->stats.sess_connect);
2467 case SSL_CTRL_SESS_CONNECT_GOOD:
2468 return tsan_load(&ctx->stats.sess_connect_good);
2469 case SSL_CTRL_SESS_CONNECT_RENEGOTIATE:
2470 return tsan_load(&ctx->stats.sess_connect_renegotiate);
2471 case SSL_CTRL_SESS_ACCEPT:
2472 return tsan_load(&ctx->stats.sess_accept);
2473 case SSL_CTRL_SESS_ACCEPT_GOOD:
2474 return tsan_load(&ctx->stats.sess_accept_good);
2475 case SSL_CTRL_SESS_ACCEPT_RENEGOTIATE:
2476 return tsan_load(&ctx->stats.sess_accept_renegotiate);
2477 case SSL_CTRL_SESS_HIT:
2478 return tsan_load(&ctx->stats.sess_hit);
2479 case SSL_CTRL_SESS_CB_HIT:
2480 return tsan_load(&ctx->stats.sess_cb_hit);
2481 case SSL_CTRL_SESS_MISSES:
2482 return tsan_load(&ctx->stats.sess_miss);
2483 case SSL_CTRL_SESS_TIMEOUTS:
2484 return tsan_load(&ctx->stats.sess_timeout);
2485 case SSL_CTRL_SESS_CACHE_FULL:
2486 return tsan_load(&ctx->stats.sess_cache_full);
2488 return (ctx->mode |= larg);
2489 case SSL_CTRL_CLEAR_MODE:
2490 return (ctx->mode &= ~larg);
2491 case SSL_CTRL_SET_MAX_SEND_FRAGMENT:
2492 if (larg < 512 || larg > SSL3_RT_MAX_PLAIN_LENGTH)
2494 ctx->max_send_fragment = larg;
2495 if (ctx->max_send_fragment < ctx->split_send_fragment)
2496 ctx->split_send_fragment = ctx->max_send_fragment;
2498 case SSL_CTRL_SET_SPLIT_SEND_FRAGMENT:
2499 if ((size_t)larg > ctx->max_send_fragment || larg == 0)
2501 ctx->split_send_fragment = larg;
2503 case SSL_CTRL_SET_MAX_PIPELINES:
2504 if (larg < 1 || larg > SSL_MAX_PIPELINES)
2506 ctx->max_pipelines = larg;
2508 case SSL_CTRL_CERT_FLAGS:
2509 return (ctx->cert->cert_flags |= larg);
2510 case SSL_CTRL_CLEAR_CERT_FLAGS:
2511 return (ctx->cert->cert_flags &= ~larg);
2512 case SSL_CTRL_SET_MIN_PROTO_VERSION:
2513 return ssl_check_allowed_versions(larg, ctx->max_proto_version)
2514 && ssl_set_version_bound(ctx->method->version, (int)larg,
2515 &ctx->min_proto_version);
2516 case SSL_CTRL_GET_MIN_PROTO_VERSION:
2517 return ctx->min_proto_version;
2518 case SSL_CTRL_SET_MAX_PROTO_VERSION:
2519 return ssl_check_allowed_versions(ctx->min_proto_version, larg)
2520 && ssl_set_version_bound(ctx->method->version, (int)larg,
2521 &ctx->max_proto_version);
2522 case SSL_CTRL_GET_MAX_PROTO_VERSION:
2523 return ctx->max_proto_version;
2525 return ctx->method->ssl_ctx_ctrl(ctx, cmd, larg, parg);
2529 long SSL_CTX_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
2532 case SSL_CTRL_SET_MSG_CALLBACK:
2533 ctx->msg_callback = (void (*)
2534 (int write_p, int version, int content_type,
2535 const void *buf, size_t len, SSL *ssl,
2540 return ctx->method->ssl_ctx_callback_ctrl(ctx, cmd, fp);
2544 int ssl_cipher_id_cmp(const SSL_CIPHER *a, const SSL_CIPHER *b)
2553 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER *const *ap,
2554 const SSL_CIPHER *const *bp)
2556 if ((*ap)->id > (*bp)->id)
2558 if ((*ap)->id < (*bp)->id)
2563 /** return a STACK of the ciphers available for the SSL and in order of
2565 STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *s)
2568 if (s->cipher_list != NULL) {
2569 return s->cipher_list;
2570 } else if ((s->ctx != NULL) && (s->ctx->cipher_list != NULL)) {
2571 return s->ctx->cipher_list;
2577 STACK_OF(SSL_CIPHER) *SSL_get_client_ciphers(const SSL *s)
2579 if ((s == NULL) || !s->server)
2581 return s->peer_ciphers;
2584 STACK_OF(SSL_CIPHER) *SSL_get1_supported_ciphers(SSL *s)
2586 STACK_OF(SSL_CIPHER) *sk = NULL, *ciphers;
2589 ciphers = SSL_get_ciphers(s);
2592 if (!ssl_set_client_disabled(s))
2594 for (i = 0; i < sk_SSL_CIPHER_num(ciphers); i++) {
2595 const SSL_CIPHER *c = sk_SSL_CIPHER_value(ciphers, i);
2596 if (!ssl_cipher_disabled(s, c, SSL_SECOP_CIPHER_SUPPORTED, 0)) {
2598 sk = sk_SSL_CIPHER_new_null();
2601 if (!sk_SSL_CIPHER_push(sk, c)) {
2602 sk_SSL_CIPHER_free(sk);
2610 /** return a STACK of the ciphers available for the SSL and in order of
2612 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s)
2615 if (s->cipher_list_by_id != NULL) {
2616 return s->cipher_list_by_id;
2617 } else if ((s->ctx != NULL) && (s->ctx->cipher_list_by_id != NULL)) {
2618 return s->ctx->cipher_list_by_id;
2624 /** The old interface to get the same thing as SSL_get_ciphers() */
2625 const char *SSL_get_cipher_list(const SSL *s, int n)
2627 const SSL_CIPHER *c;
2628 STACK_OF(SSL_CIPHER) *sk;
2632 sk = SSL_get_ciphers(s);
2633 if ((sk == NULL) || (sk_SSL_CIPHER_num(sk) <= n))
2635 c = sk_SSL_CIPHER_value(sk, n);
2641 /** return a STACK of the ciphers available for the SSL_CTX and in order of
2643 STACK_OF(SSL_CIPHER) *SSL_CTX_get_ciphers(const SSL_CTX *ctx)
2646 return ctx->cipher_list;
2651 * Distinguish between ciphers controlled by set_ciphersuite() and
2652 * set_cipher_list() when counting.
2654 static int cipher_list_tls12_num(STACK_OF(SSL_CIPHER) *sk)
2657 const SSL_CIPHER *c;
2661 for (i = 0; i < sk_SSL_CIPHER_num(sk); ++i) {
2662 c = sk_SSL_CIPHER_value(sk, i);
2663 if (c->min_tls >= TLS1_3_VERSION)
2670 /** specify the ciphers to be used by default by the SSL_CTX */
2671 int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str)
2673 STACK_OF(SSL_CIPHER) *sk;
2675 sk = ssl_create_cipher_list(ctx->method, ctx->tls13_ciphersuites,
2676 &ctx->cipher_list, &ctx->cipher_list_by_id, str,
2679 * ssl_create_cipher_list may return an empty stack if it was unable to
2680 * find a cipher matching the given rule string (for example if the rule
2681 * string specifies a cipher which has been disabled). This is not an
2682 * error as far as ssl_create_cipher_list is concerned, and hence
2683 * ctx->cipher_list and ctx->cipher_list_by_id has been updated.
2687 else if (cipher_list_tls12_num(sk) == 0) {
2688 SSLerr(SSL_F_SSL_CTX_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2694 /** specify the ciphers to be used by the SSL */
2695 int SSL_set_cipher_list(SSL *s, const char *str)
2697 STACK_OF(SSL_CIPHER) *sk;
2699 sk = ssl_create_cipher_list(s->ctx->method, s->tls13_ciphersuites,
2700 &s->cipher_list, &s->cipher_list_by_id, str,
2702 /* see comment in SSL_CTX_set_cipher_list */
2705 else if (cipher_list_tls12_num(sk) == 0) {
2706 SSLerr(SSL_F_SSL_SET_CIPHER_LIST, SSL_R_NO_CIPHER_MATCH);
2712 char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size)
2715 STACK_OF(SSL_CIPHER) *clntsk, *srvrsk;
2716 const SSL_CIPHER *c;
2720 || s->peer_ciphers == NULL
2725 clntsk = s->peer_ciphers;
2726 srvrsk = SSL_get_ciphers(s);
2727 if (clntsk == NULL || srvrsk == NULL)
2730 if (sk_SSL_CIPHER_num(clntsk) == 0 || sk_SSL_CIPHER_num(srvrsk) == 0)
2733 for (i = 0; i < sk_SSL_CIPHER_num(clntsk); i++) {
2736 c = sk_SSL_CIPHER_value(clntsk, i);
2737 if (sk_SSL_CIPHER_find(srvrsk, c) < 0)
2740 n = strlen(c->name);
2756 /** return a servername extension value if provided in Client Hello, or NULL.
2757 * So far, only host_name types are defined (RFC 3546).
2760 const char *SSL_get_servername(const SSL *s, const int type)
2762 if (type != TLSEXT_NAMETYPE_host_name)
2766 * SNI is not negotiated in pre-TLS-1.3 resumption flows, so fake up an
2767 * SNI value to return if we are resuming/resumed. N.B. that we still
2768 * call the relevant callbacks for such resumption flows, and callbacks
2769 * might error out if there is not a SNI value available.
2772 return s->session->ext.hostname;
2773 return s->ext.hostname;
2776 int SSL_get_servername_type(const SSL *s)
2779 && (!s->ext.hostname ? s->session->
2780 ext.hostname : s->ext.hostname))
2781 return TLSEXT_NAMETYPE_host_name;
2786 * SSL_select_next_proto implements the standard protocol selection. It is
2787 * expected that this function is called from the callback set by
2788 * SSL_CTX_set_next_proto_select_cb. The protocol data is assumed to be a
2789 * vector of 8-bit, length prefixed byte strings. The length byte itself is
2790 * not included in the length. A byte string of length 0 is invalid. No byte
2791 * string may be truncated. The current, but experimental algorithm for
2792 * selecting the protocol is: 1) If the server doesn't support NPN then this
2793 * is indicated to the callback. In this case, the client application has to
2794 * abort the connection or have a default application level protocol. 2) If
2795 * the server supports NPN, but advertises an empty list then the client
2796 * selects the first protocol in its list, but indicates via the API that this
2797 * fallback case was enacted. 3) Otherwise, the client finds the first
2798 * protocol in the server's list that it supports and selects this protocol.
2799 * This is because it's assumed that the server has better information about
2800 * which protocol a client should use. 4) If the client doesn't support any
2801 * of the server's advertised protocols, then this is treated the same as
2802 * case 2. It returns either OPENSSL_NPN_NEGOTIATED if a common protocol was
2803 * found, or OPENSSL_NPN_NO_OVERLAP if the fallback case was reached.
2805 int SSL_select_next_proto(unsigned char **out, unsigned char *outlen,
2806 const unsigned char *server,
2807 unsigned int server_len,
2808 const unsigned char *client, unsigned int client_len)
2811 const unsigned char *result;
2812 int status = OPENSSL_NPN_UNSUPPORTED;
2815 * For each protocol in server preference order, see if we support it.
2817 for (i = 0; i < server_len;) {
2818 for (j = 0; j < client_len;) {
2819 if (server[i] == client[j] &&
2820 memcmp(&server[i + 1], &client[j + 1], server[i]) == 0) {
2821 /* We found a match */
2822 result = &server[i];
2823 status = OPENSSL_NPN_NEGOTIATED;
2833 /* There's no overlap between our protocols and the server's list. */
2835 status = OPENSSL_NPN_NO_OVERLAP;
2838 *out = (unsigned char *)result + 1;
2839 *outlen = result[0];
2843 #ifndef OPENSSL_NO_NEXTPROTONEG
2845 * SSL_get0_next_proto_negotiated sets *data and *len to point to the
2846 * client's requested protocol for this connection and returns 0. If the
2847 * client didn't request any protocol, then *data is set to NULL. Note that
2848 * the client can request any protocol it chooses. The value returned from
2849 * this function need not be a member of the list of supported protocols
2850 * provided by the callback.
2852 void SSL_get0_next_proto_negotiated(const SSL *s, const unsigned char **data,
2856 if (*data == NULL) {
2859 *len = (unsigned int)s->ext.npn_len;
2864 * SSL_CTX_set_npn_advertised_cb sets a callback that is called when
2865 * a TLS server needs a list of supported protocols for Next Protocol
2866 * Negotiation. The returned list must be in wire format. The list is
2867 * returned by setting |out| to point to it and |outlen| to its length. This
2868 * memory will not be modified, but one should assume that the SSL* keeps a
2869 * reference to it. The callback should return SSL_TLSEXT_ERR_OK if it
2870 * wishes to advertise. Otherwise, no such extension will be included in the
2873 void SSL_CTX_set_npn_advertised_cb(SSL_CTX *ctx,
2874 SSL_CTX_npn_advertised_cb_func cb,
2877 ctx->ext.npn_advertised_cb = cb;
2878 ctx->ext.npn_advertised_cb_arg = arg;
2882 * SSL_CTX_set_next_proto_select_cb sets a callback that is called when a
2883 * client needs to select a protocol from the server's provided list. |out|
2884 * must be set to point to the selected protocol (which may be within |in|).
2885 * The length of the protocol name must be written into |outlen|. The
2886 * server's advertised protocols are provided in |in| and |inlen|. The
2887 * callback can assume that |in| is syntactically valid. The client must
2888 * select a protocol. It is fatal to the connection if this callback returns
2889 * a value other than SSL_TLSEXT_ERR_OK.
2891 void SSL_CTX_set_npn_select_cb(SSL_CTX *ctx,
2892 SSL_CTX_npn_select_cb_func cb,
2895 ctx->ext.npn_select_cb = cb;
2896 ctx->ext.npn_select_cb_arg = arg;
2901 * SSL_CTX_set_alpn_protos sets the ALPN protocol list on |ctx| to |protos|.
2902 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2903 * length-prefixed strings). Returns 0 on success.
2905 int SSL_CTX_set_alpn_protos(SSL_CTX *ctx, const unsigned char *protos,
2906 unsigned int protos_len)
2908 OPENSSL_free(ctx->ext.alpn);
2909 ctx->ext.alpn = OPENSSL_memdup(protos, protos_len);
2910 if (ctx->ext.alpn == NULL) {
2911 SSLerr(SSL_F_SSL_CTX_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2914 ctx->ext.alpn_len = protos_len;
2920 * SSL_set_alpn_protos sets the ALPN protocol list on |ssl| to |protos|.
2921 * |protos| must be in wire-format (i.e. a series of non-empty, 8-bit
2922 * length-prefixed strings). Returns 0 on success.
2924 int SSL_set_alpn_protos(SSL *ssl, const unsigned char *protos,
2925 unsigned int protos_len)
2927 OPENSSL_free(ssl->ext.alpn);
2928 ssl->ext.alpn = OPENSSL_memdup(protos, protos_len);
2929 if (ssl->ext.alpn == NULL) {
2930 SSLerr(SSL_F_SSL_SET_ALPN_PROTOS, ERR_R_MALLOC_FAILURE);
2933 ssl->ext.alpn_len = protos_len;
2939 * SSL_CTX_set_alpn_select_cb sets a callback function on |ctx| that is
2940 * called during ClientHello processing in order to select an ALPN protocol
2941 * from the client's list of offered protocols.
2943 void SSL_CTX_set_alpn_select_cb(SSL_CTX *ctx,
2944 SSL_CTX_alpn_select_cb_func cb,
2947 ctx->ext.alpn_select_cb = cb;
2948 ctx->ext.alpn_select_cb_arg = arg;
2952 * SSL_get0_alpn_selected gets the selected ALPN protocol (if any) from |ssl|.
2953 * On return it sets |*data| to point to |*len| bytes of protocol name
2954 * (not including the leading length-prefix byte). If the server didn't
2955 * respond with a negotiated protocol then |*len| will be zero.
2957 void SSL_get0_alpn_selected(const SSL *ssl, const unsigned char **data,
2960 *data = ssl->s3.alpn_selected;
2964 *len = (unsigned int)ssl->s3.alpn_selected_len;
2967 int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
2968 const char *label, size_t llen,
2969 const unsigned char *context, size_t contextlen,
2972 if (s->version < TLS1_VERSION && s->version != DTLS1_BAD_VER)
2975 return s->method->ssl3_enc->export_keying_material(s, out, olen, label,
2977 contextlen, use_context);
2980 int SSL_export_keying_material_early(SSL *s, unsigned char *out, size_t olen,
2981 const char *label, size_t llen,
2982 const unsigned char *context,
2985 if (s->version != TLS1_3_VERSION)
2988 return tls13_export_keying_material_early(s, out, olen, label, llen,
2989 context, contextlen);
2992 static unsigned long ssl_session_hash(const SSL_SESSION *a)
2994 const unsigned char *session_id = a->session_id;
2996 unsigned char tmp_storage[4];
2998 if (a->session_id_length < sizeof(tmp_storage)) {
2999 memset(tmp_storage, 0, sizeof(tmp_storage));
3000 memcpy(tmp_storage, a->session_id, a->session_id_length);
3001 session_id = tmp_storage;
3005 ((unsigned long)session_id[0]) |
3006 ((unsigned long)session_id[1] << 8L) |
3007 ((unsigned long)session_id[2] << 16L) |
3008 ((unsigned long)session_id[3] << 24L);
3013 * NB: If this function (or indeed the hash function which uses a sort of
3014 * coarser function than this one) is changed, ensure
3015 * SSL_CTX_has_matching_session_id() is checked accordingly. It relies on
3016 * being able to construct an SSL_SESSION that will collide with any existing
3017 * session with a matching session ID.
3019 static int ssl_session_cmp(const SSL_SESSION *a, const SSL_SESSION *b)
3021 if (a->ssl_version != b->ssl_version)
3023 if (a->session_id_length != b->session_id_length)
3025 return memcmp(a->session_id, b->session_id, a->session_id_length);
3029 * These wrapper functions should remain rather than redeclaring
3030 * SSL_SESSION_hash and SSL_SESSION_cmp for void* types and casting each
3031 * variable. The reason is that the functions aren't static, they're exposed
3035 SSL_CTX *SSL_CTX_new_with_libctx(OPENSSL_CTX *libctx, const char *propq,
3036 const SSL_METHOD *meth)
3038 SSL_CTX *ret = NULL;
3041 SSLerr(0, SSL_R_NULL_SSL_METHOD_PASSED);
3045 if (!OPENSSL_init_ssl(OPENSSL_INIT_LOAD_SSL_STRINGS, NULL))
3048 if (SSL_get_ex_data_X509_STORE_CTX_idx() < 0) {
3049 SSLerr(0, SSL_R_X509_VERIFICATION_SETUP_PROBLEMS);
3052 ret = OPENSSL_zalloc(sizeof(*ret));
3056 ret->libctx = libctx;
3057 if (propq != NULL) {
3058 ret->propq = OPENSSL_strdup(propq);
3059 if (ret->propq == NULL)
3064 ret->min_proto_version = 0;
3065 ret->max_proto_version = 0;
3066 ret->mode = SSL_MODE_AUTO_RETRY;
3067 ret->session_cache_mode = SSL_SESS_CACHE_SERVER;
3068 ret->session_cache_size = SSL_SESSION_CACHE_MAX_SIZE_DEFAULT;
3069 /* We take the system default. */
3070 ret->session_timeout = meth->get_timeout();
3071 ret->references = 1;
3072 ret->lock = CRYPTO_THREAD_lock_new();
3073 if (ret->lock == NULL) {
3074 SSLerr(0, ERR_R_MALLOC_FAILURE);
3078 ret->max_cert_list = SSL_MAX_CERT_LIST_DEFAULT;
3079 ret->verify_mode = SSL_VERIFY_NONE;
3080 if ((ret->cert = ssl_cert_new()) == NULL)
3083 ret->sessions = lh_SSL_SESSION_new(ssl_session_hash, ssl_session_cmp);
3084 if (ret->sessions == NULL)
3086 ret->cert_store = X509_STORE_new();
3087 if (ret->cert_store == NULL)
3089 #ifndef OPENSSL_NO_CT
3090 ret->ctlog_store = CTLOG_STORE_new();
3091 if (ret->ctlog_store == NULL)
3095 if (!SSL_CTX_set_ciphersuites(ret, OSSL_default_ciphersuites()))
3098 if (!ssl_create_cipher_list(ret->method,
3099 ret->tls13_ciphersuites,
3100 &ret->cipher_list, &ret->cipher_list_by_id,
3101 OSSL_default_cipher_list(), ret->cert)
3102 || sk_SSL_CIPHER_num(ret->cipher_list) <= 0) {
3103 SSLerr(0, SSL_R_LIBRARY_HAS_NO_CIPHERS);
3107 ret->param = X509_VERIFY_PARAM_new();
3108 if (ret->param == NULL)
3111 if ((ret->md5 = EVP_get_digestbyname("ssl3-md5")) == NULL) {
3112 SSLerr(0, SSL_R_UNABLE_TO_LOAD_SSL3_MD5_ROUTINES);
3115 if ((ret->sha1 = EVP_get_digestbyname("ssl3-sha1")) == NULL) {
3116 SSLerr(0, SSL_R_UNABLE_TO_LOAD_SSL3_SHA1_ROUTINES);
3120 if ((ret->ca_names = sk_X509_NAME_new_null()) == NULL)
3123 if ((ret->client_ca_names = sk_X509_NAME_new_null()) == NULL)
3126 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_SSL_CTX, ret, &ret->ex_data))
3129 if ((ret->ext.secure = OPENSSL_secure_zalloc(sizeof(*ret->ext.secure))) == NULL)
3132 /* No compression for DTLS */
3133 if (!(meth->ssl3_enc->enc_flags & SSL_ENC_FLAG_DTLS))
3134 ret->comp_methods = SSL_COMP_get_compression_methods();
3136 ret->max_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3137 ret->split_send_fragment = SSL3_RT_MAX_PLAIN_LENGTH;
3139 /* Setup RFC5077 ticket keys */
3140 if ((RAND_bytes(ret->ext.tick_key_name,
3141 sizeof(ret->ext.tick_key_name)) <= 0)
3142 || (RAND_priv_bytes(ret->ext.secure->tick_hmac_key,
3143 sizeof(ret->ext.secure->tick_hmac_key)) <= 0)
3144 || (RAND_priv_bytes(ret->ext.secure->tick_aes_key,
3145 sizeof(ret->ext.secure->tick_aes_key)) <= 0))
3146 ret->options |= SSL_OP_NO_TICKET;
3148 if (RAND_priv_bytes(ret->ext.cookie_hmac_key,
3149 sizeof(ret->ext.cookie_hmac_key)) <= 0)
3152 #ifndef OPENSSL_NO_SRP
3153 if (!SSL_CTX_SRP_CTX_init(ret))
3156 #ifndef OPENSSL_NO_ENGINE
3157 # ifdef OPENSSL_SSL_CLIENT_ENGINE_AUTO
3158 # define eng_strx(x) #x
3159 # define eng_str(x) eng_strx(x)
3160 /* Use specific client engine automatically... ignore errors */
3163 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3166 ENGINE_load_builtin_engines();
3167 eng = ENGINE_by_id(eng_str(OPENSSL_SSL_CLIENT_ENGINE_AUTO));
3169 if (!eng || !SSL_CTX_set_client_cert_engine(ret, eng))
3175 * Default is to connect to non-RI servers. When RI is more widely
3176 * deployed might change this.
3178 ret->options |= SSL_OP_LEGACY_SERVER_CONNECT;
3180 * Disable compression by default to prevent CRIME. Applications can
3181 * re-enable compression by configuring
3182 * SSL_CTX_clear_options(ctx, SSL_OP_NO_COMPRESSION);
3183 * or by using the SSL_CONF library. Similarly we also enable TLSv1.3
3184 * middlebox compatibility by default. This may be disabled by default in
3185 * a later OpenSSL version.
3187 ret->options |= SSL_OP_NO_COMPRESSION | SSL_OP_ENABLE_MIDDLEBOX_COMPAT;
3189 ret->ext.status_type = TLSEXT_STATUSTYPE_nothing;
3192 * We cannot usefully set a default max_early_data here (which gets
3193 * propagated in SSL_new(), for the following reason: setting the
3194 * SSL field causes tls_construct_stoc_early_data() to tell the
3195 * client that early data will be accepted when constructing a TLS 1.3
3196 * session ticket, and the client will accordingly send us early data
3197 * when using that ticket (if the client has early data to send).
3198 * However, in order for the early data to actually be consumed by
3199 * the application, the application must also have calls to
3200 * SSL_read_early_data(); otherwise we'll just skip past the early data
3201 * and ignore it. So, since the application must add calls to
3202 * SSL_read_early_data(), we also require them to add
3203 * calls to SSL_CTX_set_max_early_data() in order to use early data,
3204 * eliminating the bandwidth-wasting early data in the case described
3207 ret->max_early_data = 0;
3210 * Default recv_max_early_data is a fully loaded single record. Could be
3211 * split across multiple records in practice. We set this differently to
3212 * max_early_data so that, in the default case, we do not advertise any
3213 * support for early_data, but if a client were to send us some (e.g.
3214 * because of an old, stale ticket) then we will tolerate it and skip over
3217 ret->recv_max_early_data = SSL3_RT_MAX_PLAIN_LENGTH;
3219 /* By default we send two session tickets automatically in TLSv1.3 */
3220 ret->num_tickets = 2;
3222 ssl_ctx_system_config(ret);
3226 SSLerr(0, ERR_R_MALLOC_FAILURE);
3232 SSL_CTX *SSL_CTX_new(const SSL_METHOD *meth)
3234 return SSL_CTX_new_with_libctx(NULL, NULL, meth);
3237 int SSL_CTX_up_ref(SSL_CTX *ctx)
3241 if (CRYPTO_UP_REF(&ctx->references, &i, ctx->lock) <= 0)
3244 REF_PRINT_COUNT("SSL_CTX", ctx);
3245 REF_ASSERT_ISNT(i < 2);
3246 return ((i > 1) ? 1 : 0);
3249 void SSL_CTX_free(SSL_CTX *a)
3256 CRYPTO_DOWN_REF(&a->references, &i, a->lock);
3257 REF_PRINT_COUNT("SSL_CTX", a);
3260 REF_ASSERT_ISNT(i < 0);
3262 X509_VERIFY_PARAM_free(a->param);
3263 dane_ctx_final(&a->dane);
3266 * Free internal session cache. However: the remove_cb() may reference
3267 * the ex_data of SSL_CTX, thus the ex_data store can only be removed
3268 * after the sessions were flushed.
3269 * As the ex_data handling routines might also touch the session cache,
3270 * the most secure solution seems to be: empty (flush) the cache, then
3271 * free ex_data, then finally free the cache.
3272 * (See ticket [openssl.org #212].)
3274 if (a->sessions != NULL)
3275 SSL_CTX_flush_sessions(a, 0);
3277 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_SSL_CTX, a, &a->ex_data);
3278 lh_SSL_SESSION_free(a->sessions);
3279 X509_STORE_free(a->cert_store);
3280 #ifndef OPENSSL_NO_CT
3281 CTLOG_STORE_free(a->ctlog_store);
3283 sk_SSL_CIPHER_free(a->cipher_list);
3284 sk_SSL_CIPHER_free(a->cipher_list_by_id);
3285 sk_SSL_CIPHER_free(a->tls13_ciphersuites);
3286 ssl_cert_free(a->cert);
3287 sk_X509_NAME_pop_free(a->ca_names, X509_NAME_free);
3288 sk_X509_NAME_pop_free(a->client_ca_names, X509_NAME_free);
3289 sk_X509_pop_free(a->extra_certs, X509_free);
3290 a->comp_methods = NULL;
3291 #ifndef OPENSSL_NO_SRTP
3292 sk_SRTP_PROTECTION_PROFILE_free(a->srtp_profiles);
3294 #ifndef OPENSSL_NO_SRP
3295 SSL_CTX_SRP_CTX_free(a);
3297 #ifndef OPENSSL_NO_ENGINE
3298 ENGINE_finish(a->client_cert_engine);
3301 #ifndef OPENSSL_NO_EC
3302 OPENSSL_free(a->ext.ecpointformats);
3304 OPENSSL_free(a->ext.supportedgroups);
3305 OPENSSL_free(a->ext.alpn);
3306 OPENSSL_secure_free(a->ext.secure);
3308 CRYPTO_THREAD_lock_free(a->lock);
3310 OPENSSL_free(a->propq);
3315 void SSL_CTX_set_default_passwd_cb(SSL_CTX *ctx, pem_password_cb *cb)
3317 ctx->default_passwd_callback = cb;
3320 void SSL_CTX_set_default_passwd_cb_userdata(SSL_CTX *ctx, void *u)
3322 ctx->default_passwd_callback_userdata = u;
3325 pem_password_cb *SSL_CTX_get_default_passwd_cb(SSL_CTX *ctx)
3327 return ctx->default_passwd_callback;
3330 void *SSL_CTX_get_default_passwd_cb_userdata(SSL_CTX *ctx)
3332 return ctx->default_passwd_callback_userdata;
3335 void SSL_set_default_passwd_cb(SSL *s, pem_password_cb *cb)
3337 s->default_passwd_callback = cb;
3340 void SSL_set_default_passwd_cb_userdata(SSL *s, void *u)
3342 s->default_passwd_callback_userdata = u;
3345 pem_password_cb *SSL_get_default_passwd_cb(SSL *s)
3347 return s->default_passwd_callback;
3350 void *SSL_get_default_passwd_cb_userdata(SSL *s)
3352 return s->default_passwd_callback_userdata;
3355 void SSL_CTX_set_cert_verify_callback(SSL_CTX *ctx,
3356 int (*cb) (X509_STORE_CTX *, void *),
3359 ctx->app_verify_callback = cb;
3360 ctx->app_verify_arg = arg;
3363 void SSL_CTX_set_verify(SSL_CTX *ctx, int mode,
3364 int (*cb) (int, X509_STORE_CTX *))
3366 ctx->verify_mode = mode;
3367 ctx->default_verify_callback = cb;
3370 void SSL_CTX_set_verify_depth(SSL_CTX *ctx, int depth)
3372 X509_VERIFY_PARAM_set_depth(ctx->param, depth);
3375 void SSL_CTX_set_cert_cb(SSL_CTX *c, int (*cb) (SSL *ssl, void *arg), void *arg)
3377 ssl_cert_set_cert_cb(c->cert, cb, arg);
3380 void SSL_set_cert_cb(SSL *s, int (*cb) (SSL *ssl, void *arg), void *arg)
3382 ssl_cert_set_cert_cb(s->cert, cb, arg);
3385 void ssl_set_masks(SSL *s)
3388 uint32_t *pvalid = s->s3.tmp.valid_flags;
3389 int rsa_enc, rsa_sign, dh_tmp, dsa_sign;
3390 unsigned long mask_k, mask_a;
3391 #ifndef OPENSSL_NO_EC
3392 int have_ecc_cert, ecdsa_ok;
3397 #ifndef OPENSSL_NO_DH
3398 dh_tmp = (c->dh_tmp != NULL || c->dh_tmp_cb != NULL || c->dh_tmp_auto);
3403 rsa_enc = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3404 rsa_sign = pvalid[SSL_PKEY_RSA] & CERT_PKEY_VALID;
3405 dsa_sign = pvalid[SSL_PKEY_DSA_SIGN] & CERT_PKEY_VALID;
3406 #ifndef OPENSSL_NO_EC
3407 have_ecc_cert = pvalid[SSL_PKEY_ECC] & CERT_PKEY_VALID;
3412 OSSL_TRACE4(TLS_CIPHER, "dh_tmp=%d rsa_enc=%d rsa_sign=%d dsa_sign=%d\n",
3413 dh_tmp, rsa_enc, rsa_sign, dsa_sign);
3415 #ifndef OPENSSL_NO_GOST
3416 if (ssl_has_cert(s, SSL_PKEY_GOST12_512)) {
3417 mask_k |= SSL_kGOST;
3418 mask_a |= SSL_aGOST12;
3420 if (ssl_has_cert(s, SSL_PKEY_GOST12_256)) {
3421 mask_k |= SSL_kGOST;
3422 mask_a |= SSL_aGOST12;
3424 if (ssl_has_cert(s, SSL_PKEY_GOST01)) {
3425 mask_k |= SSL_kGOST;
3426 mask_a |= SSL_aGOST01;
3437 * If we only have an RSA-PSS certificate allow RSA authentication
3438 * if TLS 1.2 and peer supports it.
3441 if (rsa_enc || rsa_sign || (ssl_has_cert(s, SSL_PKEY_RSA_PSS_SIGN)
3442 && pvalid[SSL_PKEY_RSA_PSS_SIGN] & CERT_PKEY_EXPLICIT_SIGN
3443 && TLS1_get_version(s) == TLS1_2_VERSION))
3450 mask_a |= SSL_aNULL;
3453 * An ECC certificate may be usable for ECDH and/or ECDSA cipher suites
3454 * depending on the key usage extension.
3456 #ifndef OPENSSL_NO_EC
3457 if (have_ecc_cert) {
3459 ex_kusage = X509_get_key_usage(c->pkeys[SSL_PKEY_ECC].x509);
3460 ecdsa_ok = ex_kusage & X509v3_KU_DIGITAL_SIGNATURE;
3461 if (!(pvalid[SSL_PKEY_ECC] & CERT_PKEY_SIGN))
3464 mask_a |= SSL_aECDSA;
3466 /* Allow Ed25519 for TLS 1.2 if peer supports it */
3467 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED25519)
3468 && pvalid[SSL_PKEY_ED25519] & CERT_PKEY_EXPLICIT_SIGN
3469 && TLS1_get_version(s) == TLS1_2_VERSION)
3470 mask_a |= SSL_aECDSA;
3472 /* Allow Ed448 for TLS 1.2 if peer supports it */
3473 if (!(mask_a & SSL_aECDSA) && ssl_has_cert(s, SSL_PKEY_ED448)
3474 && pvalid[SSL_PKEY_ED448] & CERT_PKEY_EXPLICIT_SIGN
3475 && TLS1_get_version(s) == TLS1_2_VERSION)
3476 mask_a |= SSL_aECDSA;
3479 #ifndef OPENSSL_NO_EC
3480 mask_k |= SSL_kECDHE;
3483 #ifndef OPENSSL_NO_PSK
3486 if (mask_k & SSL_kRSA)
3487 mask_k |= SSL_kRSAPSK;
3488 if (mask_k & SSL_kDHE)
3489 mask_k |= SSL_kDHEPSK;
3490 if (mask_k & SSL_kECDHE)
3491 mask_k |= SSL_kECDHEPSK;
3494 s->s3.tmp.mask_k = mask_k;
3495 s->s3.tmp.mask_a = mask_a;
3498 #ifndef OPENSSL_NO_EC
3500 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s)
3502 if (s->s3.tmp.new_cipher->algorithm_auth & SSL_aECDSA) {
3503 /* key usage, if present, must allow signing */
3504 if (!(X509_get_key_usage(x) & X509v3_KU_DIGITAL_SIGNATURE)) {
3505 SSLerr(SSL_F_SSL_CHECK_SRVR_ECC_CERT_AND_ALG,
3506 SSL_R_ECC_CERT_NOT_FOR_SIGNING);
3510 return 1; /* all checks are ok */
3515 int ssl_get_server_cert_serverinfo(SSL *s, const unsigned char **serverinfo,
3516 size_t *serverinfo_length)
3518 CERT_PKEY *cpk = s->s3.tmp.cert;
3519 *serverinfo_length = 0;
3521 if (cpk == NULL || cpk->serverinfo == NULL)
3524 *serverinfo = cpk->serverinfo;
3525 *serverinfo_length = cpk->serverinfo_length;
3529 void ssl_update_cache(SSL *s, int mode)
3534 * If the session_id_length is 0, we are not supposed to cache it, and it
3535 * would be rather hard to do anyway :-)
3537 if (s->session->session_id_length == 0)
3541 * If sid_ctx_length is 0 there is no specific application context
3542 * associated with this session, so when we try to resume it and
3543 * SSL_VERIFY_PEER is requested to verify the client identity, we have no
3544 * indication that this is actually a session for the proper application
3545 * context, and the *handshake* will fail, not just the resumption attempt.
3546 * Do not cache (on the server) these sessions that are not resumable
3547 * (clients can set SSL_VERIFY_PEER without needing a sid_ctx set).
3549 if (s->server && s->session->sid_ctx_length == 0
3550 && (s->verify_mode & SSL_VERIFY_PEER) != 0)
3553 i = s->session_ctx->session_cache_mode;
3555 && (!s->hit || SSL_IS_TLS13(s))) {
3557 * Add the session to the internal cache. In server side TLSv1.3 we
3558 * normally don't do this because by default it's a full stateless ticket
3559 * with only a dummy session id so there is no reason to cache it,
3561 * - we are doing early_data, in which case we cache so that we can
3563 * - the application has set a remove_session_cb so needs to know about
3564 * session timeout events
3565 * - SSL_OP_NO_TICKET is set in which case it is a stateful ticket
3567 if ((i & SSL_SESS_CACHE_NO_INTERNAL_STORE) == 0
3568 && (!SSL_IS_TLS13(s)
3570 || (s->max_early_data > 0
3571 && (s->options & SSL_OP_NO_ANTI_REPLAY) == 0)
3572 || s->session_ctx->remove_session_cb != NULL
3573 || (s->options & SSL_OP_NO_TICKET) != 0))
3574 SSL_CTX_add_session(s->session_ctx, s->session);
3577 * Add the session to the external cache. We do this even in server side
3578 * TLSv1.3 without early data because some applications just want to
3579 * know about the creation of a session and aren't doing a full cache.
3581 if (s->session_ctx->new_session_cb != NULL) {
3582 SSL_SESSION_up_ref(s->session);
3583 if (!s->session_ctx->new_session_cb(s, s->session))
3584 SSL_SESSION_free(s->session);
3588 /* auto flush every 255 connections */
3589 if ((!(i & SSL_SESS_CACHE_NO_AUTO_CLEAR)) && ((i & mode) == mode)) {
3590 TSAN_QUALIFIER int *stat;
3591 if (mode & SSL_SESS_CACHE_CLIENT)
3592 stat = &s->session_ctx->stats.sess_connect_good;
3594 stat = &s->session_ctx->stats.sess_accept_good;
3595 if ((tsan_load(stat) & 0xff) == 0xff)
3596 SSL_CTX_flush_sessions(s->session_ctx, (unsigned long)time(NULL));
3600 const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx)
3605 const SSL_METHOD *SSL_get_ssl_method(const SSL *s)
3610 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *meth)
3614 if (s->method != meth) {
3615 const SSL_METHOD *sm = s->method;
3616 int (*hf) (SSL *) = s->handshake_func;
3618 if (sm->version == meth->version)
3623 ret = s->method->ssl_new(s);
3626 if (hf == sm->ssl_connect)
3627 s->handshake_func = meth->ssl_connect;
3628 else if (hf == sm->ssl_accept)
3629 s->handshake_func = meth->ssl_accept;
3634 int SSL_get_error(const SSL *s, int i)
3641 return SSL_ERROR_NONE;
3644 * Make things return SSL_ERROR_SYSCALL when doing SSL_do_handshake etc,
3645 * where we do encode the error
3647 if ((l = ERR_peek_error()) != 0) {
3648 if (ERR_GET_LIB(l) == ERR_LIB_SYS)
3649 return SSL_ERROR_SYSCALL;
3651 return SSL_ERROR_SSL;
3654 if (SSL_want_read(s)) {
3655 bio = SSL_get_rbio(s);
3656 if (BIO_should_read(bio))
3657 return SSL_ERROR_WANT_READ;
3658 else if (BIO_should_write(bio))
3660 * This one doesn't make too much sense ... We never try to write
3661 * to the rbio, and an application program where rbio and wbio
3662 * are separate couldn't even know what it should wait for.
3663 * However if we ever set s->rwstate incorrectly (so that we have
3664 * SSL_want_read(s) instead of SSL_want_write(s)) and rbio and
3665 * wbio *are* the same, this test works around that bug; so it
3666 * might be safer to keep it.
3668 return SSL_ERROR_WANT_WRITE;
3669 else if (BIO_should_io_special(bio)) {
3670 reason = BIO_get_retry_reason(bio);
3671 if (reason == BIO_RR_CONNECT)
3672 return SSL_ERROR_WANT_CONNECT;
3673 else if (reason == BIO_RR_ACCEPT)
3674 return SSL_ERROR_WANT_ACCEPT;
3676 return SSL_ERROR_SYSCALL; /* unknown */
3680 if (SSL_want_write(s)) {
3681 /* Access wbio directly - in order to use the buffered bio if present */
3683 if (BIO_should_write(bio))
3684 return SSL_ERROR_WANT_WRITE;
3685 else if (BIO_should_read(bio))
3687 * See above (SSL_want_read(s) with BIO_should_write(bio))
3689 return SSL_ERROR_WANT_READ;
3690 else if (BIO_should_io_special(bio)) {
3691 reason = BIO_get_retry_reason(bio);
3692 if (reason == BIO_RR_CONNECT)
3693 return SSL_ERROR_WANT_CONNECT;
3694 else if (reason == BIO_RR_ACCEPT)
3695 return SSL_ERROR_WANT_ACCEPT;
3697 return SSL_ERROR_SYSCALL;
3700 if (SSL_want_x509_lookup(s))
3701 return SSL_ERROR_WANT_X509_LOOKUP;
3702 if (SSL_want_async(s))
3703 return SSL_ERROR_WANT_ASYNC;
3704 if (SSL_want_async_job(s))
3705 return SSL_ERROR_WANT_ASYNC_JOB;
3706 if (SSL_want_client_hello_cb(s))
3707 return SSL_ERROR_WANT_CLIENT_HELLO_CB;
3709 if ((s->shutdown & SSL_RECEIVED_SHUTDOWN) &&
3710 (s->s3.warn_alert == SSL_AD_CLOSE_NOTIFY))
3711 return SSL_ERROR_ZERO_RETURN;
3713 return SSL_ERROR_SYSCALL;
3716 static int ssl_do_handshake_intern(void *vargs)
3718 struct ssl_async_args *args;
3721 args = (struct ssl_async_args *)vargs;
3724 return s->handshake_func(s);
3727 int SSL_do_handshake(SSL *s)
3731 if (s->handshake_func == NULL) {
3732 SSLerr(SSL_F_SSL_DO_HANDSHAKE, SSL_R_CONNECTION_TYPE_NOT_SET);
3736 ossl_statem_check_finish_init(s, -1);
3738 s->method->ssl_renegotiate_check(s, 0);
3740 if (SSL_in_init(s) || SSL_in_before(s)) {
3741 if ((s->mode & SSL_MODE_ASYNC) && ASYNC_get_current_job() == NULL) {
3742 struct ssl_async_args args;
3746 ret = ssl_start_async_job(s, &args, ssl_do_handshake_intern);
3748 ret = s->handshake_func(s);
3754 void SSL_set_accept_state(SSL *s)
3758 ossl_statem_clear(s);
3759 s->handshake_func = s->method->ssl_accept;
3763 void SSL_set_connect_state(SSL *s)
3767 ossl_statem_clear(s);
3768 s->handshake_func = s->method->ssl_connect;
3772 int ssl_undefined_function(SSL *s)
3774 SSLerr(SSL_F_SSL_UNDEFINED_FUNCTION, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3778 int ssl_undefined_void_function(void)
3780 SSLerr(SSL_F_SSL_UNDEFINED_VOID_FUNCTION,
3781 ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3785 int ssl_undefined_const_function(const SSL *s)
3790 const SSL_METHOD *ssl_bad_method(int ver)
3792 SSLerr(SSL_F_SSL_BAD_METHOD, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
3796 const char *ssl_protocol_to_string(int version)
3800 case TLS1_3_VERSION:
3803 case TLS1_2_VERSION:
3806 case TLS1_1_VERSION:
3821 case DTLS1_2_VERSION:
3829 const char *SSL_get_version(const SSL *s)
3831 return ssl_protocol_to_string(s->version);
3834 static int dup_ca_names(STACK_OF(X509_NAME) **dst, STACK_OF(X509_NAME) *src)
3836 STACK_OF(X509_NAME) *sk;
3845 if ((sk = sk_X509_NAME_new_null()) == NULL)
3847 for (i = 0; i < sk_X509_NAME_num(src); i++) {
3848 xn = X509_NAME_dup(sk_X509_NAME_value(src, i));
3850 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3853 if (sk_X509_NAME_insert(sk, xn, i) == 0) {
3855 sk_X509_NAME_pop_free(sk, X509_NAME_free);
3864 SSL *SSL_dup(SSL *s)
3869 /* If we're not quiescent, just up_ref! */
3870 if (!SSL_in_init(s) || !SSL_in_before(s)) {
3871 CRYPTO_UP_REF(&s->references, &i, s->lock);
3876 * Otherwise, copy configuration state, and session if set.
3878 if ((ret = SSL_new(SSL_get_SSL_CTX(s))) == NULL)
3881 if (s->session != NULL) {
3883 * Arranges to share the same session via up_ref. This "copies"
3884 * session-id, SSL_METHOD, sid_ctx, and 'cert'
3886 if (!SSL_copy_session_id(ret, s))
3890 * No session has been established yet, so we have to expect that
3891 * s->cert or ret->cert will be changed later -- they should not both
3892 * point to the same object, and thus we can't use
3893 * SSL_copy_session_id.
3895 if (!SSL_set_ssl_method(ret, s->method))
3898 if (s->cert != NULL) {
3899 ssl_cert_free(ret->cert);
3900 ret->cert = ssl_cert_dup(s->cert);
3901 if (ret->cert == NULL)
3905 if (!SSL_set_session_id_context(ret, s->sid_ctx,
3906 (int)s->sid_ctx_length))
3910 if (!ssl_dane_dup(ret, s))
3912 ret->version = s->version;
3913 ret->options = s->options;
3914 ret->mode = s->mode;
3915 SSL_set_max_cert_list(ret, SSL_get_max_cert_list(s));
3916 SSL_set_read_ahead(ret, SSL_get_read_ahead(s));
3917 ret->msg_callback = s->msg_callback;
3918 ret->msg_callback_arg = s->msg_callback_arg;
3919 SSL_set_verify(ret, SSL_get_verify_mode(s), SSL_get_verify_callback(s));
3920 SSL_set_verify_depth(ret, SSL_get_verify_depth(s));
3921 ret->generate_session_id = s->generate_session_id;
3923 SSL_set_info_callback(ret, SSL_get_info_callback(s));
3925 /* copy app data, a little dangerous perhaps */
3926 if (!CRYPTO_dup_ex_data(CRYPTO_EX_INDEX_SSL, &ret->ex_data, &s->ex_data))
3929 /* setup rbio, and wbio */
3930 if (s->rbio != NULL) {
3931 if (!BIO_dup_state(s->rbio, (char *)&ret->rbio))
3934 if (s->wbio != NULL) {
3935 if (s->wbio != s->rbio) {
3936 if (!BIO_dup_state(s->wbio, (char *)&ret->wbio))
3939 BIO_up_ref(ret->rbio);
3940 ret->wbio = ret->rbio;
3944 ret->server = s->server;
3945 if (s->handshake_func) {
3947 SSL_set_accept_state(ret);
3949 SSL_set_connect_state(ret);
3951 ret->shutdown = s->shutdown;
3954 ret->default_passwd_callback = s->default_passwd_callback;
3955 ret->default_passwd_callback_userdata = s->default_passwd_callback_userdata;
3957 X509_VERIFY_PARAM_inherit(ret->param, s->param);
3959 /* dup the cipher_list and cipher_list_by_id stacks */
3960 if (s->cipher_list != NULL) {
3961 if ((ret->cipher_list = sk_SSL_CIPHER_dup(s->cipher_list)) == NULL)
3964 if (s->cipher_list_by_id != NULL)
3965 if ((ret->cipher_list_by_id = sk_SSL_CIPHER_dup(s->cipher_list_by_id))
3969 /* Dup the client_CA list */
3970 if (!dup_ca_names(&ret->ca_names, s->ca_names)
3971 || !dup_ca_names(&ret->client_ca_names, s->client_ca_names))
3981 void ssl_clear_cipher_ctx(SSL *s)
3983 if (s->enc_read_ctx != NULL) {
3984 EVP_CIPHER_CTX_free(s->enc_read_ctx);
3985 s->enc_read_ctx = NULL;
3987 if (s->enc_write_ctx != NULL) {
3988 EVP_CIPHER_CTX_free(s->enc_write_ctx);
3989 s->enc_write_ctx = NULL;
3991 #ifndef OPENSSL_NO_COMP
3992 COMP_CTX_free(s->expand);
3994 COMP_CTX_free(s->compress);
3999 X509 *SSL_get_certificate(const SSL *s)
4001 if (s->cert != NULL)
4002 return s->cert->key->x509;
4007 EVP_PKEY *SSL_get_privatekey(const SSL *s)
4009 if (s->cert != NULL)
4010 return s->cert->key->privatekey;
4015 X509 *SSL_CTX_get0_certificate(const SSL_CTX *ctx)
4017 if (ctx->cert != NULL)
4018 return ctx->cert->key->x509;
4023 EVP_PKEY *SSL_CTX_get0_privatekey(const SSL_CTX *ctx)
4025 if (ctx->cert != NULL)
4026 return ctx->cert->key->privatekey;
4031 const SSL_CIPHER *SSL_get_current_cipher(const SSL *s)
4033 if ((s->session != NULL) && (s->session->cipher != NULL))
4034 return s->session->cipher;
4038 const SSL_CIPHER *SSL_get_pending_cipher(const SSL *s)
4040 return s->s3.tmp.new_cipher;
4043 const COMP_METHOD *SSL_get_current_compression(const SSL *s)
4045 #ifndef OPENSSL_NO_COMP
4046 return s->compress ? COMP_CTX_get_method(s->compress) : NULL;
4052 const COMP_METHOD *SSL_get_current_expansion(const SSL *s)
4054 #ifndef OPENSSL_NO_COMP
4055 return s->expand ? COMP_CTX_get_method(s->expand) : NULL;
4061 int ssl_init_wbio_buffer(SSL *s)
4065 if (s->bbio != NULL) {
4066 /* Already buffered. */
4070 bbio = BIO_new(BIO_f_buffer());
4071 if (bbio == NULL || !BIO_set_read_buffer_size(bbio, 1)) {
4073 SSLerr(SSL_F_SSL_INIT_WBIO_BUFFER, ERR_R_BUF_LIB);
4077 s->wbio = BIO_push(bbio, s->wbio);
4082 int ssl_free_wbio_buffer(SSL *s)
4084 /* callers ensure s is never null */
4085 if (s->bbio == NULL)
4088 s->wbio = BIO_pop(s->wbio);
4095 void SSL_CTX_set_quiet_shutdown(SSL_CTX *ctx, int mode)
4097 ctx->quiet_shutdown = mode;
4100 int SSL_CTX_get_quiet_shutdown(const SSL_CTX *ctx)
4102 return ctx->quiet_shutdown;
4105 void SSL_set_quiet_shutdown(SSL *s, int mode)
4107 s->quiet_shutdown = mode;
4110 int SSL_get_quiet_shutdown(const SSL *s)
4112 return s->quiet_shutdown;
4115 void SSL_set_shutdown(SSL *s, int mode)
4120 int SSL_get_shutdown(const SSL *s)
4125 int SSL_version(const SSL *s)
4130 int SSL_client_version(const SSL *s)
4132 return s->client_version;
4135 SSL_CTX *SSL_get_SSL_CTX(const SSL *ssl)
4140 SSL_CTX *SSL_set_SSL_CTX(SSL *ssl, SSL_CTX *ctx)
4143 if (ssl->ctx == ctx)
4146 ctx = ssl->session_ctx;
4147 new_cert = ssl_cert_dup(ctx->cert);
4148 if (new_cert == NULL) {
4152 if (!custom_exts_copy_flags(&new_cert->custext, &ssl->cert->custext)) {
4153 ssl_cert_free(new_cert);
4157 ssl_cert_free(ssl->cert);
4158 ssl->cert = new_cert;
4161 * Program invariant: |sid_ctx| has fixed size (SSL_MAX_SID_CTX_LENGTH),
4162 * so setter APIs must prevent invalid lengths from entering the system.
4164 if (!ossl_assert(ssl->sid_ctx_length <= sizeof(ssl->sid_ctx)))
4168 * If the session ID context matches that of the parent SSL_CTX,
4169 * inherit it from the new SSL_CTX as well. If however the context does
4170 * not match (i.e., it was set per-ssl with SSL_set_session_id_context),
4171 * leave it unchanged.
4173 if ((ssl->ctx != NULL) &&
4174 (ssl->sid_ctx_length == ssl->ctx->sid_ctx_length) &&
4175 (memcmp(ssl->sid_ctx, ssl->ctx->sid_ctx, ssl->sid_ctx_length) == 0)) {
4176 ssl->sid_ctx_length = ctx->sid_ctx_length;
4177 memcpy(&ssl->sid_ctx, &ctx->sid_ctx, sizeof(ssl->sid_ctx));
4180 SSL_CTX_up_ref(ctx);
4181 SSL_CTX_free(ssl->ctx); /* decrement reference count */
4187 int SSL_CTX_set_default_verify_paths(SSL_CTX *ctx)
4189 return X509_STORE_set_default_paths(ctx->cert_store);
4192 int SSL_CTX_set_default_verify_dir(SSL_CTX *ctx)
4194 X509_LOOKUP *lookup;
4196 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_hash_dir());
4200 /* We ignore errors, in case the directory doesn't exist */
4203 X509_LOOKUP_add_dir(lookup, NULL, X509_FILETYPE_DEFAULT);
4210 int SSL_CTX_set_default_verify_file(SSL_CTX *ctx)
4212 X509_LOOKUP *lookup;
4214 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_file());
4218 /* We ignore errors, in case the directory doesn't exist */
4221 X509_LOOKUP_load_file(lookup, NULL, X509_FILETYPE_DEFAULT);
4228 int SSL_CTX_set_default_verify_store(SSL_CTX *ctx)
4230 X509_LOOKUP *lookup;
4232 lookup = X509_STORE_add_lookup(ctx->cert_store, X509_LOOKUP_store());
4236 /* We ignore errors, in case the directory doesn't exist */
4239 X509_LOOKUP_add_store(lookup, NULL);
4246 int SSL_CTX_load_verify_file(SSL_CTX *ctx, const char *CAfile)
4248 return X509_STORE_load_file(ctx->cert_store, CAfile);
4251 int SSL_CTX_load_verify_dir(SSL_CTX *ctx, const char *CApath)
4253 return X509_STORE_load_path(ctx->cert_store, CApath);
4256 int SSL_CTX_load_verify_store(SSL_CTX *ctx, const char *CAstore)
4258 return X509_STORE_load_store(ctx->cert_store, CAstore);
4261 #ifndef OPENSSL_NO_DEPRECATED_3_0
4262 int SSL_CTX_load_verify_locations(SSL_CTX *ctx, const char *CAfile,
4265 if (CAfile == NULL && CApath == NULL)
4267 if (CAfile != NULL && !SSL_CTX_load_verify_file(ctx, CAfile))
4269 if (CApath != NULL && !SSL_CTX_load_verify_dir(ctx, CApath))
4275 void SSL_set_info_callback(SSL *ssl,
4276 void (*cb) (const SSL *ssl, int type, int val))
4278 ssl->info_callback = cb;
4282 * One compiler (Diab DCC) doesn't like argument names in returned function
4285 void (*SSL_get_info_callback(const SSL *ssl)) (const SSL * /* ssl */ ,
4288 return ssl->info_callback;
4291 void SSL_set_verify_result(SSL *ssl, long arg)
4293 ssl->verify_result = arg;
4296 long SSL_get_verify_result(const SSL *ssl)
4298 return ssl->verify_result;
4301 size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, size_t outlen)
4304 return sizeof(ssl->s3.client_random);
4305 if (outlen > sizeof(ssl->s3.client_random))
4306 outlen = sizeof(ssl->s3.client_random);
4307 memcpy(out, ssl->s3.client_random, outlen);
4311 size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, size_t outlen)
4314 return sizeof(ssl->s3.server_random);
4315 if (outlen > sizeof(ssl->s3.server_random))
4316 outlen = sizeof(ssl->s3.server_random);
4317 memcpy(out, ssl->s3.server_random, outlen);
4321 size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
4322 unsigned char *out, size_t outlen)
4325 return session->master_key_length;
4326 if (outlen > session->master_key_length)
4327 outlen = session->master_key_length;
4328 memcpy(out, session->master_key, outlen);
4332 int SSL_SESSION_set1_master_key(SSL_SESSION *sess, const unsigned char *in,
4335 if (len > sizeof(sess->master_key))
4338 memcpy(sess->master_key, in, len);
4339 sess->master_key_length = len;
4344 int SSL_set_ex_data(SSL *s, int idx, void *arg)
4346 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4349 void *SSL_get_ex_data(const SSL *s, int idx)
4351 return CRYPTO_get_ex_data(&s->ex_data, idx);
4354 int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)
4356 return CRYPTO_set_ex_data(&s->ex_data, idx, arg);
4359 void *SSL_CTX_get_ex_data(const SSL_CTX *s, int idx)
4361 return CRYPTO_get_ex_data(&s->ex_data, idx);
4364 X509_STORE *SSL_CTX_get_cert_store(const SSL_CTX *ctx)
4366 return ctx->cert_store;
4369 void SSL_CTX_set_cert_store(SSL_CTX *ctx, X509_STORE *store)
4371 X509_STORE_free(ctx->cert_store);
4372 ctx->cert_store = store;
4375 void SSL_CTX_set1_cert_store(SSL_CTX *ctx, X509_STORE *store)
4378 X509_STORE_up_ref(store);
4379 SSL_CTX_set_cert_store(ctx, store);
4382 int SSL_want(const SSL *s)
4388 * \brief Set the callback for generating temporary DH keys.
4389 * \param ctx the SSL context.
4390 * \param dh the callback
4393 #ifndef OPENSSL_NO_DH
4394 void SSL_CTX_set_tmp_dh_callback(SSL_CTX *ctx,
4395 DH *(*dh) (SSL *ssl, int is_export,
4398 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4401 void SSL_set_tmp_dh_callback(SSL *ssl, DH *(*dh) (SSL *ssl, int is_export,
4404 SSL_callback_ctrl(ssl, SSL_CTRL_SET_TMP_DH_CB, (void (*)(void))dh);
4408 #ifndef OPENSSL_NO_PSK
4409 int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *identity_hint)
4411 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4412 SSLerr(SSL_F_SSL_CTX_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4415 OPENSSL_free(ctx->cert->psk_identity_hint);
4416 if (identity_hint != NULL) {
4417 ctx->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4418 if (ctx->cert->psk_identity_hint == NULL)
4421 ctx->cert->psk_identity_hint = NULL;
4425 int SSL_use_psk_identity_hint(SSL *s, const char *identity_hint)
4430 if (identity_hint != NULL && strlen(identity_hint) > PSK_MAX_IDENTITY_LEN) {
4431 SSLerr(SSL_F_SSL_USE_PSK_IDENTITY_HINT, SSL_R_DATA_LENGTH_TOO_LONG);
4434 OPENSSL_free(s->cert->psk_identity_hint);
4435 if (identity_hint != NULL) {
4436 s->cert->psk_identity_hint = OPENSSL_strdup(identity_hint);
4437 if (s->cert->psk_identity_hint == NULL)
4440 s->cert->psk_identity_hint = NULL;
4444 const char *SSL_get_psk_identity_hint(const SSL *s)
4446 if (s == NULL || s->session == NULL)
4448 return s->session->psk_identity_hint;
4451 const char *SSL_get_psk_identity(const SSL *s)
4453 if (s == NULL || s->session == NULL)
4455 return s->session->psk_identity;
4458 void SSL_set_psk_client_callback(SSL *s, SSL_psk_client_cb_func cb)
4460 s->psk_client_callback = cb;
4463 void SSL_CTX_set_psk_client_callback(SSL_CTX *ctx, SSL_psk_client_cb_func cb)
4465 ctx->psk_client_callback = cb;
4468 void SSL_set_psk_server_callback(SSL *s, SSL_psk_server_cb_func cb)
4470 s->psk_server_callback = cb;
4473 void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, SSL_psk_server_cb_func cb)
4475 ctx->psk_server_callback = cb;
4479 void SSL_set_psk_find_session_callback(SSL *s, SSL_psk_find_session_cb_func cb)
4481 s->psk_find_session_cb = cb;
4484 void SSL_CTX_set_psk_find_session_callback(SSL_CTX *ctx,
4485 SSL_psk_find_session_cb_func cb)
4487 ctx->psk_find_session_cb = cb;
4490 void SSL_set_psk_use_session_callback(SSL *s, SSL_psk_use_session_cb_func cb)
4492 s->psk_use_session_cb = cb;
4495 void SSL_CTX_set_psk_use_session_callback(SSL_CTX *ctx,
4496 SSL_psk_use_session_cb_func cb)
4498 ctx->psk_use_session_cb = cb;
4501 void SSL_CTX_set_msg_callback(SSL_CTX *ctx,
4502 void (*cb) (int write_p, int version,
4503 int content_type, const void *buf,
4504 size_t len, SSL *ssl, void *arg))
4506 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4509 void SSL_set_msg_callback(SSL *ssl,
4510 void (*cb) (int write_p, int version,
4511 int content_type, const void *buf,
4512 size_t len, SSL *ssl, void *arg))
4514 SSL_callback_ctrl(ssl, SSL_CTRL_SET_MSG_CALLBACK, (void (*)(void))cb);
4517 void SSL_CTX_set_not_resumable_session_callback(SSL_CTX *ctx,
4518 int (*cb) (SSL *ssl,
4522 SSL_CTX_callback_ctrl(ctx, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4523 (void (*)(void))cb);
4526 void SSL_set_not_resumable_session_callback(SSL *ssl,
4527 int (*cb) (SSL *ssl,
4528 int is_forward_secure))
4530 SSL_callback_ctrl(ssl, SSL_CTRL_SET_NOT_RESUMABLE_SESS_CB,
4531 (void (*)(void))cb);
4534 void SSL_CTX_set_record_padding_callback(SSL_CTX *ctx,
4535 size_t (*cb) (SSL *ssl, int type,
4536 size_t len, void *arg))
4538 ctx->record_padding_cb = cb;
4541 void SSL_CTX_set_record_padding_callback_arg(SSL_CTX *ctx, void *arg)
4543 ctx->record_padding_arg = arg;
4546 void *SSL_CTX_get_record_padding_callback_arg(const SSL_CTX *ctx)
4548 return ctx->record_padding_arg;
4551 int SSL_CTX_set_block_padding(SSL_CTX *ctx, size_t block_size)
4553 /* block size of 0 or 1 is basically no padding */
4554 if (block_size == 1)
4555 ctx->block_padding = 0;
4556 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4557 ctx->block_padding = block_size;
4563 void SSL_set_record_padding_callback(SSL *ssl,
4564 size_t (*cb) (SSL *ssl, int type,
4565 size_t len, void *arg))
4567 ssl->record_padding_cb = cb;
4570 void SSL_set_record_padding_callback_arg(SSL *ssl, void *arg)
4572 ssl->record_padding_arg = arg;
4575 void *SSL_get_record_padding_callback_arg(const SSL *ssl)
4577 return ssl->record_padding_arg;
4580 int SSL_set_block_padding(SSL *ssl, size_t block_size)
4582 /* block size of 0 or 1 is basically no padding */
4583 if (block_size == 1)
4584 ssl->block_padding = 0;
4585 else if (block_size <= SSL3_RT_MAX_PLAIN_LENGTH)
4586 ssl->block_padding = block_size;
4592 int SSL_set_num_tickets(SSL *s, size_t num_tickets)
4594 s->num_tickets = num_tickets;
4599 size_t SSL_get_num_tickets(const SSL *s)
4601 return s->num_tickets;
4604 int SSL_CTX_set_num_tickets(SSL_CTX *ctx, size_t num_tickets)
4606 ctx->num_tickets = num_tickets;
4611 size_t SSL_CTX_get_num_tickets(const SSL_CTX *ctx)
4613 return ctx->num_tickets;
4617 * Allocates new EVP_MD_CTX and sets pointer to it into given pointer
4618 * variable, freeing EVP_MD_CTX previously stored in that variable, if any.
4619 * If EVP_MD pointer is passed, initializes ctx with this |md|.
4620 * Returns the newly allocated ctx;
4623 EVP_MD_CTX *ssl_replace_hash(EVP_MD_CTX **hash, const EVP_MD *md)
4625 ssl_clear_hash_ctx(hash);
4626 *hash = EVP_MD_CTX_new();
4627 if (*hash == NULL || (md && EVP_DigestInit_ex(*hash, md, NULL) <= 0)) {
4628 EVP_MD_CTX_free(*hash);
4635 void ssl_clear_hash_ctx(EVP_MD_CTX **hash)
4638 EVP_MD_CTX_free(*hash);
4642 /* Retrieve handshake hashes */
4643 int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen,
4646 EVP_MD_CTX *ctx = NULL;
4647 EVP_MD_CTX *hdgst = s->s3.handshake_dgst;
4648 int hashleni = EVP_MD_CTX_size(hdgst);
4651 if (hashleni < 0 || (size_t)hashleni > outlen) {
4652 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4653 ERR_R_INTERNAL_ERROR);
4657 ctx = EVP_MD_CTX_new();
4661 if (!EVP_MD_CTX_copy_ex(ctx, hdgst)
4662 || EVP_DigestFinal_ex(ctx, out, NULL) <= 0) {
4663 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_HANDSHAKE_HASH,
4664 ERR_R_INTERNAL_ERROR);
4668 *hashlen = hashleni;
4672 EVP_MD_CTX_free(ctx);
4676 int SSL_session_reused(const SSL *s)
4681 int SSL_is_server(const SSL *s)
4686 #ifndef OPENSSL_NO_DEPRECATED_1_1_0
4687 void SSL_set_debug(SSL *s, int debug)
4689 /* Old function was do-nothing anyway... */
4695 void SSL_set_security_level(SSL *s, int level)
4697 s->cert->sec_level = level;
4700 int SSL_get_security_level(const SSL *s)
4702 return s->cert->sec_level;
4705 void SSL_set_security_callback(SSL *s,
4706 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4707 int op, int bits, int nid,
4708 void *other, void *ex))
4710 s->cert->sec_cb = cb;
4713 int (*SSL_get_security_callback(const SSL *s)) (const SSL *s,
4714 const SSL_CTX *ctx, int op,
4715 int bits, int nid, void *other,
4717 return s->cert->sec_cb;
4720 void SSL_set0_security_ex_data(SSL *s, void *ex)
4722 s->cert->sec_ex = ex;
4725 void *SSL_get0_security_ex_data(const SSL *s)
4727 return s->cert->sec_ex;
4730 void SSL_CTX_set_security_level(SSL_CTX *ctx, int level)
4732 ctx->cert->sec_level = level;
4735 int SSL_CTX_get_security_level(const SSL_CTX *ctx)
4737 return ctx->cert->sec_level;
4740 void SSL_CTX_set_security_callback(SSL_CTX *ctx,
4741 int (*cb) (const SSL *s, const SSL_CTX *ctx,
4742 int op, int bits, int nid,
4743 void *other, void *ex))
4745 ctx->cert->sec_cb = cb;
4748 int (*SSL_CTX_get_security_callback(const SSL_CTX *ctx)) (const SSL *s,
4754 return ctx->cert->sec_cb;
4757 void SSL_CTX_set0_security_ex_data(SSL_CTX *ctx, void *ex)
4759 ctx->cert->sec_ex = ex;
4762 void *SSL_CTX_get0_security_ex_data(const SSL_CTX *ctx)
4764 return ctx->cert->sec_ex;
4768 * Get/Set/Clear options in SSL_CTX or SSL, formerly macros, now functions that
4769 * can return unsigned long, instead of the generic long return value from the
4770 * control interface.
4772 unsigned long SSL_CTX_get_options(const SSL_CTX *ctx)
4774 return ctx->options;
4777 unsigned long SSL_get_options(const SSL *s)
4782 unsigned long SSL_CTX_set_options(SSL_CTX *ctx, unsigned long op)
4784 return ctx->options |= op;
4787 unsigned long SSL_set_options(SSL *s, unsigned long op)
4789 return s->options |= op;
4792 unsigned long SSL_CTX_clear_options(SSL_CTX *ctx, unsigned long op)
4794 return ctx->options &= ~op;
4797 unsigned long SSL_clear_options(SSL *s, unsigned long op)
4799 return s->options &= ~op;
4802 STACK_OF(X509) *SSL_get0_verified_chain(const SSL *s)
4804 return s->verified_chain;
4807 IMPLEMENT_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER, ssl_cipher_id);
4809 #ifndef OPENSSL_NO_CT
4812 * Moves SCTs from the |src| stack to the |dst| stack.
4813 * The source of each SCT will be set to |origin|.
4814 * If |dst| points to a NULL pointer, a new stack will be created and owned by
4816 * Returns the number of SCTs moved, or a negative integer if an error occurs.
4818 static int ct_move_scts(STACK_OF(SCT) **dst, STACK_OF(SCT) *src,
4819 sct_source_t origin)
4825 *dst = sk_SCT_new_null();
4827 SSLerr(SSL_F_CT_MOVE_SCTS, ERR_R_MALLOC_FAILURE);
4832 while ((sct = sk_SCT_pop(src)) != NULL) {
4833 if (SCT_set_source(sct, origin) != 1)
4836 if (sk_SCT_push(*dst, sct) <= 0)
4844 sk_SCT_push(src, sct); /* Put the SCT back */
4849 * Look for data collected during ServerHello and parse if found.
4850 * Returns the number of SCTs extracted.
4852 static int ct_extract_tls_extension_scts(SSL *s)
4854 int scts_extracted = 0;
4856 if (s->ext.scts != NULL) {
4857 const unsigned char *p = s->ext.scts;
4858 STACK_OF(SCT) *scts = o2i_SCT_LIST(NULL, &p, s->ext.scts_len);
4860 scts_extracted = ct_move_scts(&s->scts, scts, SCT_SOURCE_TLS_EXTENSION);
4862 SCT_LIST_free(scts);
4865 return scts_extracted;
4869 * Checks for an OCSP response and then attempts to extract any SCTs found if it
4870 * contains an SCT X509 extension. They will be stored in |s->scts|.
4872 * - The number of SCTs extracted, assuming an OCSP response exists.
4873 * - 0 if no OCSP response exists or it contains no SCTs.
4874 * - A negative integer if an error occurs.
4876 static int ct_extract_ocsp_response_scts(SSL *s)
4878 # ifndef OPENSSL_NO_OCSP
4879 int scts_extracted = 0;
4880 const unsigned char *p;
4881 OCSP_BASICRESP *br = NULL;
4882 OCSP_RESPONSE *rsp = NULL;
4883 STACK_OF(SCT) *scts = NULL;
4886 if (s->ext.ocsp.resp == NULL || s->ext.ocsp.resp_len == 0)
4889 p = s->ext.ocsp.resp;
4890 rsp = d2i_OCSP_RESPONSE(NULL, &p, (int)s->ext.ocsp.resp_len);
4894 br = OCSP_response_get1_basic(rsp);
4898 for (i = 0; i < OCSP_resp_count(br); ++i) {
4899 OCSP_SINGLERESP *single = OCSP_resp_get0(br, i);
4905 OCSP_SINGLERESP_get1_ext_d2i(single, NID_ct_cert_scts, NULL, NULL);
4907 ct_move_scts(&s->scts, scts, SCT_SOURCE_OCSP_STAPLED_RESPONSE);
4908 if (scts_extracted < 0)
4912 SCT_LIST_free(scts);
4913 OCSP_BASICRESP_free(br);
4914 OCSP_RESPONSE_free(rsp);
4915 return scts_extracted;
4917 /* Behave as if no OCSP response exists */
4923 * Attempts to extract SCTs from the peer certificate.
4924 * Return the number of SCTs extracted, or a negative integer if an error
4927 static int ct_extract_x509v3_extension_scts(SSL *s)
4929 int scts_extracted = 0;
4930 X509 *cert = s->session != NULL ? s->session->peer : NULL;
4933 STACK_OF(SCT) *scts =
4934 X509_get_ext_d2i(cert, NID_ct_precert_scts, NULL, NULL);
4937 ct_move_scts(&s->scts, scts, SCT_SOURCE_X509V3_EXTENSION);
4939 SCT_LIST_free(scts);
4942 return scts_extracted;
4946 * Attempts to find all received SCTs by checking TLS extensions, the OCSP
4947 * response (if it exists) and X509v3 extensions in the certificate.
4948 * Returns NULL if an error occurs.
4950 const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s)
4952 if (!s->scts_parsed) {
4953 if (ct_extract_tls_extension_scts(s) < 0 ||
4954 ct_extract_ocsp_response_scts(s) < 0 ||
4955 ct_extract_x509v3_extension_scts(s) < 0)
4965 static int ct_permissive(const CT_POLICY_EVAL_CTX * ctx,
4966 const STACK_OF(SCT) *scts, void *unused_arg)
4971 static int ct_strict(const CT_POLICY_EVAL_CTX * ctx,
4972 const STACK_OF(SCT) *scts, void *unused_arg)
4974 int count = scts != NULL ? sk_SCT_num(scts) : 0;
4977 for (i = 0; i < count; ++i) {
4978 SCT *sct = sk_SCT_value(scts, i);
4979 int status = SCT_get_validation_status(sct);
4981 if (status == SCT_VALIDATION_STATUS_VALID)
4984 SSLerr(SSL_F_CT_STRICT, SSL_R_NO_VALID_SCTS);
4988 int SSL_set_ct_validation_callback(SSL *s, ssl_ct_validation_cb callback,
4992 * Since code exists that uses the custom extension handler for CT, look
4993 * for this and throw an error if they have already registered to use CT.
4995 if (callback != NULL && SSL_CTX_has_client_custom_ext(s->ctx,
4996 TLSEXT_TYPE_signed_certificate_timestamp))
4998 SSLerr(SSL_F_SSL_SET_CT_VALIDATION_CALLBACK,
4999 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5003 if (callback != NULL) {
5005 * If we are validating CT, then we MUST accept SCTs served via OCSP
5007 if (!SSL_set_tlsext_status_type(s, TLSEXT_STATUSTYPE_ocsp))
5011 s->ct_validation_callback = callback;
5012 s->ct_validation_callback_arg = arg;
5017 int SSL_CTX_set_ct_validation_callback(SSL_CTX *ctx,
5018 ssl_ct_validation_cb callback, void *arg)
5021 * Since code exists that uses the custom extension handler for CT, look for
5022 * this and throw an error if they have already registered to use CT.
5024 if (callback != NULL && SSL_CTX_has_client_custom_ext(ctx,
5025 TLSEXT_TYPE_signed_certificate_timestamp))
5027 SSLerr(SSL_F_SSL_CTX_SET_CT_VALIDATION_CALLBACK,
5028 SSL_R_CUSTOM_EXT_HANDLER_ALREADY_INSTALLED);
5032 ctx->ct_validation_callback = callback;
5033 ctx->ct_validation_callback_arg = arg;
5037 int SSL_ct_is_enabled(const SSL *s)
5039 return s->ct_validation_callback != NULL;
5042 int SSL_CTX_ct_is_enabled(const SSL_CTX *ctx)
5044 return ctx->ct_validation_callback != NULL;
5047 int ssl_validate_ct(SSL *s)
5050 X509 *cert = s->session != NULL ? s->session->peer : NULL;
5052 SSL_DANE *dane = &s->dane;
5053 CT_POLICY_EVAL_CTX *ctx = NULL;
5054 const STACK_OF(SCT) *scts;
5057 * If no callback is set, the peer is anonymous, or its chain is invalid,
5058 * skip SCT validation - just return success. Applications that continue
5059 * handshakes without certificates, with unverified chains, or pinned leaf
5060 * certificates are outside the scope of the WebPKI and CT.
5062 * The above exclusions notwithstanding the vast majority of peers will
5063 * have rather ordinary certificate chains validated by typical
5064 * applications that perform certificate verification and therefore will
5065 * process SCTs when enabled.
5067 if (s->ct_validation_callback == NULL || cert == NULL ||
5068 s->verify_result != X509_V_OK ||
5069 s->verified_chain == NULL || sk_X509_num(s->verified_chain) <= 1)
5073 * CT not applicable for chains validated via DANE-TA(2) or DANE-EE(3)
5074 * trust-anchors. See https://tools.ietf.org/html/rfc7671#section-4.2
5076 if (DANETLS_ENABLED(dane) && dane->mtlsa != NULL) {
5077 switch (dane->mtlsa->usage) {
5078 case DANETLS_USAGE_DANE_TA:
5079 case DANETLS_USAGE_DANE_EE:
5084 ctx = CT_POLICY_EVAL_CTX_new();
5086 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_VALIDATE_CT,
5087 ERR_R_MALLOC_FAILURE);
5091 issuer = sk_X509_value(s->verified_chain, 1);
5092 CT_POLICY_EVAL_CTX_set1_cert(ctx, cert);
5093 CT_POLICY_EVAL_CTX_set1_issuer(ctx, issuer);
5094 CT_POLICY_EVAL_CTX_set_shared_CTLOG_STORE(ctx, s->ctx->ctlog_store);
5095 CT_POLICY_EVAL_CTX_set_time(
5096 ctx, (uint64_t)SSL_SESSION_get_time(SSL_get0_session(s)) * 1000);
5098 scts = SSL_get0_peer_scts(s);
5101 * This function returns success (> 0) only when all the SCTs are valid, 0
5102 * when some are invalid, and < 0 on various internal errors (out of
5103 * memory, etc.). Having some, or even all, invalid SCTs is not sufficient
5104 * reason to abort the handshake, that decision is up to the callback.
5105 * Therefore, we error out only in the unexpected case that the return
5106 * value is negative.
5108 * XXX: One might well argue that the return value of this function is an
5109 * unfortunate design choice. Its job is only to determine the validation
5110 * status of each of the provided SCTs. So long as it correctly separates
5111 * the wheat from the chaff it should return success. Failure in this case
5112 * ought to correspond to an inability to carry out its duties.
5114 if (SCT_LIST_validate(scts, ctx) < 0) {
5115 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5116 SSL_R_SCT_VERIFICATION_FAILED);
5120 ret = s->ct_validation_callback(ctx, scts, s->ct_validation_callback_arg);
5122 ret = 0; /* This function returns 0 on failure */
5124 SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_SSL_VALIDATE_CT,
5125 SSL_R_CALLBACK_FAILED);
5128 CT_POLICY_EVAL_CTX_free(ctx);
5130 * With SSL_VERIFY_NONE the session may be cached and re-used despite a
5131 * failure return code here. Also the application may wish the complete
5132 * the handshake, and then disconnect cleanly at a higher layer, after
5133 * checking the verification status of the completed connection.
5135 * We therefore force a certificate verification failure which will be
5136 * visible via SSL_get_verify_result() and cached as part of any resumed
5139 * Note: the permissive callback is for information gathering only, always
5140 * returns success, and does not affect verification status. Only the
5141 * strict callback or a custom application-specified callback can trigger
5142 * connection failure or record a verification error.
5145 s->verify_result = X509_V_ERR_NO_VALID_SCTS;
5149 int SSL_CTX_enable_ct(SSL_CTX *ctx, int validation_mode)
5151 switch (validation_mode) {
5153 SSLerr(SSL_F_SSL_CTX_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5155 case SSL_CT_VALIDATION_PERMISSIVE:
5156 return SSL_CTX_set_ct_validation_callback(ctx, ct_permissive, NULL);
5157 case SSL_CT_VALIDATION_STRICT:
5158 return SSL_CTX_set_ct_validation_callback(ctx, ct_strict, NULL);
5162 int SSL_enable_ct(SSL *s, int validation_mode)
5164 switch (validation_mode) {
5166 SSLerr(SSL_F_SSL_ENABLE_CT, SSL_R_INVALID_CT_VALIDATION_TYPE);
5168 case SSL_CT_VALIDATION_PERMISSIVE:
5169 return SSL_set_ct_validation_callback(s, ct_permissive, NULL);
5170 case SSL_CT_VALIDATION_STRICT:
5171 return SSL_set_ct_validation_callback(s, ct_strict, NULL);
5175 int SSL_CTX_set_default_ctlog_list_file(SSL_CTX *ctx)
5177 return CTLOG_STORE_load_default_file(ctx->ctlog_store);
5180 int SSL_CTX_set_ctlog_list_file(SSL_CTX *ctx, const char *path)
5182 return CTLOG_STORE_load_file(ctx->ctlog_store, path);
5185 void SSL_CTX_set0_ctlog_store(SSL_CTX *ctx, CTLOG_STORE * logs)
5187 CTLOG_STORE_free(ctx->ctlog_store);
5188 ctx->ctlog_store = logs;
5191 const CTLOG_STORE *SSL_CTX_get0_ctlog_store(const SSL_CTX *ctx)
5193 return ctx->ctlog_store;
5196 #endif /* OPENSSL_NO_CT */
5198 void SSL_CTX_set_client_hello_cb(SSL_CTX *c, SSL_client_hello_cb_fn cb,
5201 c->client_hello_cb = cb;
5202 c->client_hello_cb_arg = arg;
5205 int SSL_client_hello_isv2(SSL *s)
5207 if (s->clienthello == NULL)
5209 return s->clienthello->isv2;
5212 unsigned int SSL_client_hello_get0_legacy_version(SSL *s)
5214 if (s->clienthello == NULL)
5216 return s->clienthello->legacy_version;
5219 size_t SSL_client_hello_get0_random(SSL *s, const unsigned char **out)
5221 if (s->clienthello == NULL)
5224 *out = s->clienthello->random;
5225 return SSL3_RANDOM_SIZE;
5228 size_t SSL_client_hello_get0_session_id(SSL *s, const unsigned char **out)
5230 if (s->clienthello == NULL)
5233 *out = s->clienthello->session_id;
5234 return s->clienthello->session_id_len;
5237 size_t SSL_client_hello_get0_ciphers(SSL *s, const unsigned char **out)
5239 if (s->clienthello == NULL)
5242 *out = PACKET_data(&s->clienthello->ciphersuites);
5243 return PACKET_remaining(&s->clienthello->ciphersuites);
5246 size_t SSL_client_hello_get0_compression_methods(SSL *s, const unsigned char **out)
5248 if (s->clienthello == NULL)
5251 *out = s->clienthello->compressions;
5252 return s->clienthello->compressions_len;
5255 int SSL_client_hello_get1_extensions_present(SSL *s, int **out, size_t *outlen)
5261 if (s->clienthello == NULL || out == NULL || outlen == NULL)
5263 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5264 ext = s->clienthello->pre_proc_exts + i;
5273 if ((present = OPENSSL_malloc(sizeof(*present) * num)) == NULL) {
5274 SSLerr(SSL_F_SSL_CLIENT_HELLO_GET1_EXTENSIONS_PRESENT,
5275 ERR_R_MALLOC_FAILURE);
5278 for (i = 0; i < s->clienthello->pre_proc_exts_len; i++) {
5279 ext = s->clienthello->pre_proc_exts + i;
5281 if (ext->received_order >= num)
5283 present[ext->received_order] = ext->type;
5290 OPENSSL_free(present);
5294 int SSL_client_hello_get0_ext(SSL *s, unsigned int type, const unsigned char **out,
5300 if (s->clienthello == NULL)
5302 for (i = 0; i < s->clienthello->pre_proc_exts_len; ++i) {
5303 r = s->clienthello->pre_proc_exts + i;
5304 if (r->present && r->type == type) {
5306 *out = PACKET_data(&r->data);
5308 *outlen = PACKET_remaining(&r->data);
5315 int SSL_free_buffers(SSL *ssl)
5317 RECORD_LAYER *rl = &ssl->rlayer;
5319 if (RECORD_LAYER_read_pending(rl) || RECORD_LAYER_write_pending(rl))
5322 RECORD_LAYER_release(rl);
5326 int SSL_alloc_buffers(SSL *ssl)
5328 return ssl3_setup_buffers(ssl);
5331 void SSL_CTX_set_keylog_callback(SSL_CTX *ctx, SSL_CTX_keylog_cb_func cb)
5333 ctx->keylog_callback = cb;
5336 SSL_CTX_keylog_cb_func SSL_CTX_get_keylog_callback(const SSL_CTX *ctx)
5338 return ctx->keylog_callback;
5341 static int nss_keylog_int(const char *prefix,
5343 const uint8_t *parameter_1,
5344 size_t parameter_1_len,
5345 const uint8_t *parameter_2,
5346 size_t parameter_2_len)
5349 char *cursor = NULL;
5354 if (ssl->ctx->keylog_callback == NULL)
5358 * Our output buffer will contain the following strings, rendered with
5359 * space characters in between, terminated by a NULL character: first the
5360 * prefix, then the first parameter, then the second parameter. The
5361 * meaning of each parameter depends on the specific key material being
5362 * logged. Note that the first and second parameters are encoded in
5363 * hexadecimal, so we need a buffer that is twice their lengths.
5365 prefix_len = strlen(prefix);
5366 out_len = prefix_len + (2 * parameter_1_len) + (2 * parameter_2_len) + 3;
5367 if ((out = cursor = OPENSSL_malloc(out_len)) == NULL) {
5368 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR, SSL_F_NSS_KEYLOG_INT,
5369 ERR_R_MALLOC_FAILURE);
5373 strcpy(cursor, prefix);
5374 cursor += prefix_len;
5377 for (i = 0; i < parameter_1_len; i++) {
5378 sprintf(cursor, "%02x", parameter_1[i]);
5383 for (i = 0; i < parameter_2_len; i++) {
5384 sprintf(cursor, "%02x", parameter_2[i]);
5389 ssl->ctx->keylog_callback(ssl, (const char *)out);
5390 OPENSSL_clear_free(out, out_len);
5395 int ssl_log_rsa_client_key_exchange(SSL *ssl,
5396 const uint8_t *encrypted_premaster,
5397 size_t encrypted_premaster_len,
5398 const uint8_t *premaster,
5399 size_t premaster_len)
5401 if (encrypted_premaster_len < 8) {
5402 SSLfatal(ssl, SSL_AD_INTERNAL_ERROR,
5403 SSL_F_SSL_LOG_RSA_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
5407 /* We only want the first 8 bytes of the encrypted premaster as a tag. */
5408 return nss_keylog_int("RSA",
5410 encrypted_premaster,
5416 int ssl_log_secret(SSL *ssl,
5418 const uint8_t *secret,
5421 return nss_keylog_int(label,
5423 ssl->s3.client_random,
5429 #define SSLV2_CIPHER_LEN 3
5431 int ssl_cache_cipherlist(SSL *s, PACKET *cipher_suites, int sslv2format)
5435 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5437 if (PACKET_remaining(cipher_suites) == 0) {
5438 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_SSL_CACHE_CIPHERLIST,
5439 SSL_R_NO_CIPHERS_SPECIFIED);
5443 if (PACKET_remaining(cipher_suites) % n != 0) {
5444 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5445 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5449 OPENSSL_free(s->s3.tmp.ciphers_raw);
5450 s->s3.tmp.ciphers_raw = NULL;
5451 s->s3.tmp.ciphers_rawlen = 0;
5454 size_t numciphers = PACKET_remaining(cipher_suites) / n;
5455 PACKET sslv2ciphers = *cipher_suites;
5456 unsigned int leadbyte;
5460 * We store the raw ciphers list in SSLv3+ format so we need to do some
5461 * preprocessing to convert the list first. If there are any SSLv2 only
5462 * ciphersuites with a non-zero leading byte then we are going to
5463 * slightly over allocate because we won't store those. But that isn't a
5466 raw = OPENSSL_malloc(numciphers * TLS_CIPHER_LEN);
5467 s->s3.tmp.ciphers_raw = raw;
5469 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5470 ERR_R_MALLOC_FAILURE);
5473 for (s->s3.tmp.ciphers_rawlen = 0;
5474 PACKET_remaining(&sslv2ciphers) > 0;
5475 raw += TLS_CIPHER_LEN) {
5476 if (!PACKET_get_1(&sslv2ciphers, &leadbyte)
5478 && !PACKET_copy_bytes(&sslv2ciphers, raw,
5481 && !PACKET_forward(&sslv2ciphers, TLS_CIPHER_LEN))) {
5482 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5484 OPENSSL_free(s->s3.tmp.ciphers_raw);
5485 s->s3.tmp.ciphers_raw = NULL;
5486 s->s3.tmp.ciphers_rawlen = 0;
5490 s->s3.tmp.ciphers_rawlen += TLS_CIPHER_LEN;
5492 } else if (!PACKET_memdup(cipher_suites, &s->s3.tmp.ciphers_raw,
5493 &s->s3.tmp.ciphers_rawlen)) {
5494 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_SSL_CACHE_CIPHERLIST,
5495 ERR_R_INTERNAL_ERROR);
5501 int SSL_bytes_to_cipher_list(SSL *s, const unsigned char *bytes, size_t len,
5502 int isv2format, STACK_OF(SSL_CIPHER) **sk,
5503 STACK_OF(SSL_CIPHER) **scsvs)
5507 if (!PACKET_buf_init(&pkt, bytes, len))
5509 return bytes_to_cipher_list(s, &pkt, sk, scsvs, isv2format, 0);
5512 int bytes_to_cipher_list(SSL *s, PACKET *cipher_suites,
5513 STACK_OF(SSL_CIPHER) **skp,
5514 STACK_OF(SSL_CIPHER) **scsvs_out,
5515 int sslv2format, int fatal)
5517 const SSL_CIPHER *c;
5518 STACK_OF(SSL_CIPHER) *sk = NULL;
5519 STACK_OF(SSL_CIPHER) *scsvs = NULL;
5521 /* 3 = SSLV2_CIPHER_LEN > TLS_CIPHER_LEN = 2. */
5522 unsigned char cipher[SSLV2_CIPHER_LEN];
5524 n = sslv2format ? SSLV2_CIPHER_LEN : TLS_CIPHER_LEN;
5526 if (PACKET_remaining(cipher_suites) == 0) {
5528 SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_BYTES_TO_CIPHER_LIST,
5529 SSL_R_NO_CIPHERS_SPECIFIED);
5531 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_NO_CIPHERS_SPECIFIED);
5535 if (PACKET_remaining(cipher_suites) % n != 0) {
5537 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5538 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5540 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST,
5541 SSL_R_ERROR_IN_RECEIVED_CIPHER_LIST);
5545 sk = sk_SSL_CIPHER_new_null();
5546 scsvs = sk_SSL_CIPHER_new_null();
5547 if (sk == NULL || scsvs == NULL) {
5549 SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5550 ERR_R_MALLOC_FAILURE);
5552 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5556 while (PACKET_copy_bytes(cipher_suites, cipher, n)) {
5558 * SSLv3 ciphers wrapped in an SSLv2-compatible ClientHello have the
5559 * first byte set to zero, while true SSLv2 ciphers have a non-zero
5560 * first byte. We don't support any true SSLv2 ciphers, so skip them.
5562 if (sslv2format && cipher[0] != '\0')
5565 /* For SSLv2-compat, ignore leading 0-byte. */
5566 c = ssl_get_cipher_by_char(s, sslv2format ? &cipher[1] : cipher, 1);
5568 if ((c->valid && !sk_SSL_CIPHER_push(sk, c)) ||
5569 (!c->valid && !sk_SSL_CIPHER_push(scsvs, c))) {
5571 SSLfatal(s, SSL_AD_INTERNAL_ERROR,
5572 SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5574 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, ERR_R_MALLOC_FAILURE);
5579 if (PACKET_remaining(cipher_suites) > 0) {
5581 SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_BYTES_TO_CIPHER_LIST,
5584 SSLerr(SSL_F_BYTES_TO_CIPHER_LIST, SSL_R_BAD_LENGTH);
5591 sk_SSL_CIPHER_free(sk);
5592 if (scsvs_out != NULL)
5595 sk_SSL_CIPHER_free(scsvs);
5598 sk_SSL_CIPHER_free(sk);
5599 sk_SSL_CIPHER_free(scsvs);
5603 int SSL_CTX_set_max_early_data(SSL_CTX *ctx, uint32_t max_early_data)
5605 ctx->max_early_data = max_early_data;
5610 uint32_t SSL_CTX_get_max_early_data(const SSL_CTX *ctx)
5612 return ctx->max_early_data;
5615 int SSL_set_max_early_data(SSL *s, uint32_t max_early_data)
5617 s->max_early_data = max_early_data;
5622 uint32_t SSL_get_max_early_data(const SSL *s)
5624 return s->max_early_data;
5627 int SSL_CTX_set_recv_max_early_data(SSL_CTX *ctx, uint32_t recv_max_early_data)
5629 ctx->recv_max_early_data = recv_max_early_data;
5634 uint32_t SSL_CTX_get_recv_max_early_data(const SSL_CTX *ctx)
5636 return ctx->recv_max_early_data;
5639 int SSL_set_recv_max_early_data(SSL *s, uint32_t recv_max_early_data)
5641 s->recv_max_early_data = recv_max_early_data;
5646 uint32_t SSL_get_recv_max_early_data(const SSL *s)
5648 return s->recv_max_early_data;
5651 __owur unsigned int ssl_get_max_send_fragment(const SSL *ssl)
5653 /* Return any active Max Fragment Len extension */
5654 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session))
5655 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5657 /* return current SSL connection setting */
5658 return ssl->max_send_fragment;
5661 __owur unsigned int ssl_get_split_send_fragment(const SSL *ssl)
5663 /* Return a value regarding an active Max Fragment Len extension */
5664 if (ssl->session != NULL && USE_MAX_FRAGMENT_LENGTH_EXT(ssl->session)
5665 && ssl->split_send_fragment > GET_MAX_FRAGMENT_LENGTH(ssl->session))
5666 return GET_MAX_FRAGMENT_LENGTH(ssl->session);
5668 /* else limit |split_send_fragment| to current |max_send_fragment| */
5669 if (ssl->split_send_fragment > ssl->max_send_fragment)
5670 return ssl->max_send_fragment;
5672 /* return current SSL connection setting */
5673 return ssl->split_send_fragment;
5676 int SSL_stateless(SSL *s)
5680 /* Ensure there is no state left over from a previous invocation */
5686 s->s3.flags |= TLS1_FLAGS_STATELESS;
5687 ret = SSL_accept(s);
5688 s->s3.flags &= ~TLS1_FLAGS_STATELESS;
5690 if (ret > 0 && s->ext.cookieok)
5693 if (s->hello_retry_request == SSL_HRR_PENDING && !ossl_statem_in_error(s))
5699 void SSL_CTX_set_post_handshake_auth(SSL_CTX *ctx, int val)
5701 ctx->pha_enabled = val;
5704 void SSL_set_post_handshake_auth(SSL *ssl, int val)
5706 ssl->pha_enabled = val;
5709 int SSL_verify_client_post_handshake(SSL *ssl)
5711 if (!SSL_IS_TLS13(ssl)) {
5712 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_WRONG_SSL_VERSION);
5716 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_NOT_SERVER);
5720 if (!SSL_is_init_finished(ssl)) {
5721 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_STILL_IN_INIT);
5725 switch (ssl->post_handshake_auth) {
5727 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_EXTENSION_NOT_RECEIVED);
5730 case SSL_PHA_EXT_SENT:
5731 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, ERR_R_INTERNAL_ERROR);
5733 case SSL_PHA_EXT_RECEIVED:
5735 case SSL_PHA_REQUEST_PENDING:
5736 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_PENDING);
5738 case SSL_PHA_REQUESTED:
5739 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_REQUEST_SENT);
5743 ssl->post_handshake_auth = SSL_PHA_REQUEST_PENDING;
5745 /* checks verify_mode and algorithm_auth */
5746 if (!send_certificate_request(ssl)) {
5747 ssl->post_handshake_auth = SSL_PHA_EXT_RECEIVED; /* restore on error */
5748 SSLerr(SSL_F_SSL_VERIFY_CLIENT_POST_HANDSHAKE, SSL_R_INVALID_CONFIG);
5752 ossl_statem_set_in_init(ssl, 1);
5756 int SSL_CTX_set_session_ticket_cb(SSL_CTX *ctx,
5757 SSL_CTX_generate_session_ticket_fn gen_cb,
5758 SSL_CTX_decrypt_session_ticket_fn dec_cb,
5761 ctx->generate_ticket_cb = gen_cb;
5762 ctx->decrypt_ticket_cb = dec_cb;
5763 ctx->ticket_cb_data = arg;
5767 void SSL_CTX_set_allow_early_data_cb(SSL_CTX *ctx,
5768 SSL_allow_early_data_cb_fn cb,
5771 ctx->allow_early_data_cb = cb;
5772 ctx->allow_early_data_cb_data = arg;
5775 void SSL_set_allow_early_data_cb(SSL *s,
5776 SSL_allow_early_data_cb_fn cb,
5779 s->allow_early_data_cb = cb;
5780 s->allow_early_data_cb_data = arg;